chemical reaction Crossword Puzzles

Vocab 6.B Diego Valera 2017-04-07

Vocab 6.B Diego Valera crossword puzzle
Across
  1. a substance that takes part in and undergoes change during a reaction.
  2. column of the periodic table. They are extremely reactive.
  3. A chemical formula is a way of expressing information about the proportions of atoms that constitute a particular chemical compound, using a single line of chemical element symbols, numbers, and sometimes also other symbols, such as parentheses, dashes, brackets, commas and plus (+) and minus (−) signs.
  4. A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulas.
  5. Chemical changes occur when a substance combines with another to form a new substance, called synthesis or, alternatively, decomposes into two or more different substances. These processes are called chemical reactions and, in general, are not reversible except by further chemical reactions.
  6. the result of a chemical reaction.
  7. The alkali metals are a group of elements in the periodic table. They are all in the
Down
  1. The law of conservation of mass or principle of mass conservation states that for any system closed to all transfers of matter and energy, the mass of the system must remain constant over time, as system mass cannot change quantity if it is not added or removed. Hence, the quantity of mass is "conserved" over time.
  2. A chemical bond is a lasting attraction between atoms that enables the formation of chemical compounds.
  3. Physical changes occur when objects or substances undergo a change that changes the physical form of a composition but not the chemical composition.
  4. An electron in an outer shell of an atom that can participate in forming chemical bonds with other atoms.
  5. The noble gases make a group of chemical elements with similar properties. Under standard conditions, they are all odorless, colorless, monatomic gases with very low chemical reactivity. The six noble gases that occur naturally are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and the radioactive radon (Rn).

12 Clues: the result of a chemical reaction. • column of the periodic table. They are extremely reactive. • a substance that takes part in and undergoes change during a reaction. • The alkali metals are a group of elements in the periodic table. They are all in the • A chemical bond is a lasting attraction between atoms that enables the formation of chemical compounds. • ...

Vocabulary 6B period 01 Colton Andrews 2017-04-06

Vocabulary 6B period 01 Colton Andrews crossword puzzle
Across
  1. - The alkali metals are a group of elements in the periodic table. They are all in the
  2. - A chemical formula is a way of expressing information about the proportions of atoms that constitute a particular chemical compound, using a single line of chemical element symbols, numbers, and sometimes also other symbols, such as parentheses, dashes, brackets, commas and plus (+) and minus (−) signs.
  3. - the result of a chemical reaction.
  4. - Chemical changes occur when a substance combines with another to form a new substance, called synthesis or, alternatively, decomposes into two or more different substances. These processes are called chemical reactions and, in general, are not reversible except by further chemical reactions.
  5. - The law of conservation of mass or principle of mass conservation states that for any system closed to all transfers of matter and energy, the mass of the system must remain constant over time, as system mass cannot change quantity if it is not added or removed. Hence, the quantity of mass is "conserved" over time.
  6. - A chemical bond is a lasting attraction between atoms that enables the formation of chemical compounds.
Down
  1. - A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulas.
  2. - An electron in an outer shell of an atom that can participate in forming chemical bonds with other atoms.
  3. - The noble gases make a group of chemical elements with similar properties. Under standard conditions, they are all odorless, colorless, monatomic gases with very low chemical reactivity. The six noble gases that occur naturally are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and the radioactive radon (Rn).
  4. - Physical changes occur when objects or substances undergo a change that changes the physical form of a composition but not the chemical composition.
  5. column of the periodic table. They are extremely reactive.
  6. - a substance that takes part in and undergoes change during a reaction.

12 Clues: - the result of a chemical reaction. • column of the periodic table. They are extremely reactive. • - a substance that takes part in and undergoes change during a reaction. • - The alkali metals are a group of elements in the periodic table. They are all in the • ...

Vocab 6B 2017-04-04

Vocab 6B crossword puzzle
Across
  1. a substance that takes part in and undergoes change during a reaction.
  2. Physical changes occur when objects or substances undergo a change that changes the physical form of a composition but not the chemical composition.
  3. An electron in an outer shell of an atom that can participate in forming chemical bonds with other atoms.
  4. A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulas.
  5. The alkali metals are a group of elements in the periodic table. They are all in the
Down
  1. The noble gases make a group of chemical elements with similar properties. Under standard conditions, they are all odorless, colorless, monatomic gases with very low chemical reactivity. The six noble gases that occur naturally are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and the radioactive radon (Rn).
  2. column of the periodic table. They are extremely reactive.
  3. The law of conservation of mass or principle of mass conservation states that for any system closed to all transfers of matter and energy, the mass of the system must remain constant over time, as system mass cannot change quantity if it is not added or removed. Hence, the quantity of mass is "conserved" over time.
  4. Chemical changes occur when a substance combines with another to form a new substance, called synthesis or, alternatively, decomposes into two or more different substances. These processes are called chemical reactions and, in general, are not reversible except by further chemical reactions.
  5. A chemical bond is a lasting attraction between atoms that enables the formation of chemical compounds.
  6. the result of a chemical reaction.
  7. A chemical formula is a way of expressing information about the proportions of atoms that constitute a particular chemical compound, using a single line of chemical element symbols, numbers, and sometimes also other symbols, such as parentheses, dashes, brackets, commas and plus (+) and minus (−) signs.

12 Clues: the result of a chemical reaction. • column of the periodic table. They are extremely reactive. • a substance that takes part in and undergoes change during a reaction. • The alkali metals are a group of elements in the periodic table. They are all in the • A chemical bond is a lasting attraction between atoms that enables the formation of chemical compounds. • ...

Unit 5 Crossword Puzzle 2022-11-21

Unit 5 Crossword Puzzle crossword puzzle
Across
  1. substance present at the start of a chemical reaction
  2. one reactant breaks down into multiple/simpler products
  3. small numbers that are a part of the compound's formula
  4. any hydrocarbon reacting with oxygen releases heat, carbon dioxide, and water
  5. number written in front of a chemical equation
Down
  1. replacement two reacting compounds switch an element (their "partners")
  2. replacement one element switches places with another element in a compound
  3. a non-metal will share its valence electrons with another non-metal
  4. substance present at the end of a chemical reaction
  5. a metal will transfer its valence electrons with another non-metal
  6. when atoms gain or lose electrons
  7. have no fear of ice cold bears
  8. 2 or more elements combined
  9. 2 or more elements combine to make one product

14 Clues: 2 or more elements combined • have no fear of ice cold bears • when atoms gain or lose electrons • 2 or more elements combine to make one product • number written in front of a chemical equation • substance present at the end of a chemical reaction • substance present at the start of a chemical reaction • one reactant breaks down into multiple/simpler products • ...

Year 9 Science 2023-11-07

Year 9 Science crossword puzzle
Across
  1. A change in which atoms are rearranged to create a new substance
  2. Type of circuit where each component is connected on its own branch
  3. A chemical .... shows how many atoms of each elements are in a compound
  4. One or two letter code used to identify the elements on the periodic table
  5. The closed path through which the electrical charge can flow
  6. The product in this reaction: carbon + oxygen = ....
  7. Type of circuit where the components are connected in a line
  8. There are more than a hundred substances shown in the periodic table, which cannot be broken into any smaller parts
  9. Group 8 of the periodic table- unreactive gases, which include helium and krypton
  10. The amount of mass in a given volume
  11. A chemical reaction with oxygen that gives out light and heat
  12. You would use this piece of equipment when leaving things out to dry or evaporate
  13. When pouring substances into narrow openings, you would use this piece of equipment
  14. The least reactive metal on the reactivity series
  15. When all the connections in a circuit are joined and the flow of charge is not interrupted, the circuit is ....
  16. Similar to a spoon, this item is used to scoop, scrape and transfer substances
  17. A change which transfers energy to the surroundings
  18. Two or more connected cells in an electrical circuit
  19. Group 1 of the periodic table- reactive metals, which include lithium and rubidium
  20. The name given to the horizontal rows on the periodic ta The elements on the periodic table are organised depending on this
  21. The resulting substances in a chemical reaction
  22. Type of reaction where one metal takes the position of another
  23. When a chemical reaction occurs, .... is transferred to or from the surroundings
  24. Group 7 of the periodic table- reactive non-metals, which include fluorine and iodine
  25. The smallest part of a chemical element
  26. This is required within an electrical circuit to move the charge and create a current
  27. Named after the German chemist Robert Bunsen
  28. A possible source of danger (something you check before conducting an experiment)
  29. This narrow tube is commonly used in practical work in science. It can hold small amounts of substances
  30. A reaction which transfers energy from the surroundings
Down
  1. Method of separating a solution to recover the dissolved substance
  2. The elements on the periodic table are organised depending on this
  3. This shallow, transparent dish is often used to grow cell cultures such as bacteria and fungi
  4. Use this piece of equipment to measure the volume of a liquid
  5. Equipment used to measure voltage
  6. The number on the periodic table that represents the number of protons in an atom’s nucleus
  7. A material that will reduce electrical energy passing through it
  8. A single battery in an electrical circuit
  9. Method of separating dissolved and not dissolved substances in a solution
  10. A device or part of a circuit
  11. When measuring temperature, you would use a ....
  12. Unit of measurement for voltage
  13. A nutrient that is used by the body for growth and repair
  14. Something that can be used to complete or break a circuit connection
  15. This specialised paper helps separate substances such as sand and water
  16. A nutrient that is used by the body as the main source of energy
  17. When observing a chemical reaction, you might feel the chemicals change in
  18. The starting substances in a chemical reaction
  19. The name given to the vertical columns on the periodic table
  20. A type of flask with a triangular shape
  21. This piece of electronic equipment measures mass
  22. Equipment used to measure the flow of electrons in a circuit
  23. The flow of electric charge in a circuit
  24. Unit of measurement for current
  25. A substance made of two or more atoms chemically joined together
  26. This piece of equipment is a three-legged stand
  27. A substance that does not take part in chemical reactions
  28. A material that will allow energy (heat or electrical) to pass through it easily.
  29. The solution used to test for starch
  30. Protective equipment worn in a lab
  31. To stir substances, you would use a ....
  32. The elements on the right-hand side of the table are all ....
  33. This safety equipment is used to protect your eyes during practical work
  34. This piece of equipment comes in different sizes and is used to transport liquid.

64 Clues: A device or part of a circuit • Unit of measurement for voltage • Unit of measurement for current • Equipment used to measure voltage • Protective equipment worn in a lab • The amount of mass in a given volume • The solution used to test for starch • A type of flask with a triangular shape • The smallest part of a chemical element • The flow of electric charge in a circuit • ...

photosynthesis 2022-05-02

photosynthesis crossword puzzle
Across
  1. pigment that gives plants their green color,
  2. provides the hydrogen needed to form glucose
  3. Plants convert carbon dioxide to oxygen
  4. formed by green plants from carbon dioxide and water during the process of photosynthesis
  5. allow plants to have strong, upright structures
  6. released as a byproduct
Down
  1. plant cell organelles that convert light energy into relatively stable chemical energy via the photosynthetic process.
  2. involves two reactants, carbon dioxide and water.
  3. glucose and oxygen
  4. carbon dioxide and water
  5. a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration,
  6. The energy from light causes a chemical reaction that breaks down

12 Clues: glucose and oxygen • released as a byproduct • carbon dioxide and water • Plants convert carbon dioxide to oxygen • pigment that gives plants their green color, • provides the hydrogen needed to form glucose • allow plants to have strong, upright structures • involves two reactants, carbon dioxide and water. • ...

7th Grade Monday Crossword Puzzle 2025-11-21

7th Grade Monday Crossword Puzzle crossword puzzle
Across
  1. identifies the color or texture of a substance
  2. the amount of matter in an object
  3. type of change when a new substance is formed
  4. a change in shape no new substance formed
  5. word used to describe why something sinks or floats in water
Down
  1. formed at the end of chemical reaction
  2. number of hydrogen atoms in water
  3. test used to determine if a gas will burn or not
  4. part of a chemical reaction that combines to form a new substance
  5. if something sinks in water we say it is _____ dense than water
  6. state of matter in which particles a far apart
  7. type of system gases can escape from

12 Clues: number of hydrogen atoms in water • the amount of matter in an object • type of system gases can escape from • formed at the end of chemical reaction • a change in shape no new substance formed • type of change when a new substance is formed • identifies the color or texture of a substance • state of matter in which particles a far apart • ...

States of Matter 2019-02-13

States of Matter crossword puzzle
Across
  1. Solids, Liquids and Gases
  2. Is a chemical reaction that is accompanied by the absorption of heat, or an organism that generates heat to maintain its temperature.
  3. the transition of a substance directly from the solid to the gas phase
  4. Geological process in which sediments, soil and rocks are added to a landform or land mass
  5. is a chemical reaction that releases energy through light or heat
  6. is the net movement of molecules from a region of higher concentration to a region of lower concentration
  7. Where the liquid goes into the solid phase
  8. type of homogeneous mixture composed of two or more substances
Down
  1. Where things come closer together
  2. a liquid as it changes into the gas phase
  3. affecting the form of a chemical substance, but not its chemical composition
  4. Water which collects as droplets on a cold surface when humid air is in contact with it
  5. the creation of a solid from a solution
  6. Heating up to extreme heat before bubbling
  7. Where things spread further apart
  8. Where the solid moves into the liquid stage

16 Clues: Solids, Liquids and Gases • Where things come closer together • Where things spread further apart • the creation of a solid from a solution • a liquid as it changes into the gas phase • Heating up to extreme heat before bubbling • Where the liquid goes into the solid phase • Where the solid moves into the liquid stage • ...

109 2025-08-21

109 crossword puzzle
Across
  1. Ability to store electric charge
  2. Distance between wave peaks
  3. Upthrust in a fluid
  4. Heat transfer by fluid motion
  5. Height of a wave
  6. Separation by boiling point
  7. Energy transfer by waves
  8. Opposition in an AC circuit
  9. Material with zero electrical resistance
  10. Same protons, different neutrons
  11. Heat transfer through contact
  12. Basic on the pH scale
  13. Material’s opposition to current
  14. Reaction that releases heat
  15. Force over distance
Down
  1. Circuit that produces a repeating signal
  2. Rate at which work is done
  3. Bond formed by shared electrons
  4. Loss of electrons in a reaction
  5. Converts AC to DC
  6. Emission of electrons by light
  7. Measured addition to find concentration
  8. Number of cycles per second
  9. Intermediate electrical conductor
  10. Resistance to change in motion
  11. Property opposing change in current
  12. Reaction that absorbs heat
  13. Acceleration of a chemical reaction
  14. Gain of electrons in a reaction
  15. Mass per unit volume
  16. Mass times velocity
  17. Semiconductor switching device
  18. Bending of waves around edges
  19. Allows current in one direction
  20. Band of colors or frequencies

35 Clues: Height of a wave • Converts AC to DC • Upthrust in a fluid • Mass times velocity • Force over distance • Mass per unit volume • Basic on the pH scale • Energy transfer by waves • Rate at which work is done • Reaction that absorbs heat • Distance between wave peaks • Number of cycles per second • Separation by boiling point • Opposition in an AC circuit • Reaction that releases heat • ...

Unit 02 2025-08-21

Unit 02 crossword puzzle
Across
  1. Formulas written on the right side of the yield are the new substances formed in a chemical reaction.
  2. A way to show the number and type of atoms in a compound or a molecule with symbols and numbers.
  3. A change in which a substance (or substances) is changed into one or more new substances with different properties than the original substances
  4. written on the left side of the yield are the starting substances in a chemical reaction.
  5. states that mass cannot be created or destroyed.
Down
  1. Two or more atoms joined together. The atoms can be the same element or different elements.
  2. A number in front of any chemical formula in a chemical equation showing the number of molecules involved in the reaction.
  3. A small number that is written below the normal line of letters to show the number of atoms of each element is present in a substance.
  4. Describes what happens in a chemical reaction. The equation identifies the starting materials (reactants) and resulting substances (product) in formula form.
  5. A substance composed of two or more DIFFERENT element.

10 Clues: states that mass cannot be created or destroyed. • A substance composed of two or more DIFFERENT element. • written on the left side of the yield are the starting substances in a chemical reaction. • Two or more atoms joined together. The atoms can be the same element or different elements. • ...

Regulation of biochemical pathways in photosynthesis and cellular respiration 2026-02-05

Regulation of biochemical pathways in photosynthesis and cellular respiration crossword puzzle
Across
  1. Variable that restricts the rate of an enzyme‑controlled reaction
  2. Levelling off of reaction rate due to limiting conditions
  3. Molecule that reduces enzyme activity by binding to it
  4. Permanent change in an enzyme’s shape that stops it from functioning
  5. Enzyme binding site that is separate from the active site
  6. Enzyme inhibition caused by a molecule binding to the active site
  7. Substance that increases reaction rate by lowering activation energy and without being consumed
  8. Reactant molecule that binds to an enzyme and is changed during the reaction
  9. Protein that acts as a biological catalyst by lowering activation energy
Down
  1. Molecule that binds to an enzyme’s allosteric site to reduce activity
  2. Specific region of an enzyme where the substrate binds
  3. Sequence of enzyme‑controlled reactions where each product becomes the next substrate
  4. Metabolic reactions that break down large molecules into smaller components
  5. Minimum amount of energy required for a chemical reaction to begin
  6. Type of metabolic reaction that builds complex molecules using energy
  7. Organic molecule required to assist enzyme function
  8. Conditions at which an enzyme works most efficiently
  9. Point where increasing substrate concentration no longer increases reaction rate

18 Clues: Organic molecule required to assist enzyme function • Conditions at which an enzyme works most efficiently • Specific region of an enzyme where the substrate binds • Molecule that reduces enzyme activity by binding to it • Levelling off of reaction rate due to limiting conditions • Enzyme binding site that is separate from the active site • ...

Enzyme Crossword 2026-01-20

Enzyme Crossword crossword puzzle
Across
  1. When an enzymes chemical structure is broken
  2. Specific Sequence of amino acids
  3. The non-competitive inhibitor binds here
  4. Highest level of protein organization
  5. Highest level of activity in a reaction
Down
  1. The substrate binds here
  2. Makes amino acids unique
  3. Maximum rate of reaction
  4. Speeds up chemical reactions
  5. The substance being broken down by the enzyme

10 Clues: The substrate binds here • Makes amino acids unique • Maximum rate of reaction • Speeds up chemical reactions • Specific Sequence of amino acids • Highest level of protein organization • Highest level of activity in a reaction • The non-competitive inhibitor binds here • When an enzymes chemical structure is broken • The substance being broken down by the enzyme

Breaking Down Matter 2022-10-27

Breaking Down Matter crossword puzzle
Across
  1. 21% of the air we breathe
  2. purest substance that can't be broken down
  3. negative charge surrounding the nucleus
  4. 2 or more atoms joined together
  5. reaction reaction in which no new substance is formed
Down
  1. 78% of the air we breathe
  2. neutral charge in the nucleus
  3. the center of an atom
  4. the ability of matter to dissolve in a liquid
  5. reaction reaction that forms a new substance
  6. positive charge in the nucleus
  7. 2 or more different atoms joined together
  8. smallest part of an element that is microscopic

13 Clues: the center of an atom • 78% of the air we breathe • 21% of the air we breathe • neutral charge in the nucleus • positive charge in the nucleus • 2 or more atoms joined together • negative charge surrounding the nucleus • 2 or more different atoms joined together • purest substance that can't be broken down • reaction reaction that forms a new substance • ...

CHAPTER 5 METABOLISM AND ENZYMES 2020-03-09

CHAPTER 5 METABOLISM AND ENZYMES crossword puzzle
Across
  1. Specific region on enzyme surface
  2. Process of breaking down complex substances
  3. Causes changes in the structure of active site
  4. Reaction that uses or absorbs energy
  5. Created after enzyme reaction
Down
  1. Needed in enzyme reaction
  2. All chemical reactions that occur in a living organism
  3. Substrate
  4. Enzyme
  5. Energy needed to break the bond in substrate molecule
  6. Assists in biochemical reactions
  7. Organic catalyst
  8. Hinder enzymes from binding with substrate

13 Clues: Enzyme • Substrate • Organic catalyst • Needed in enzyme reaction • Created after enzyme reaction • Assists in biochemical reactions • Specific region on enzyme surface • Reaction that uses or absorbs energy • Hinder enzymes from binding with substrate • Process of breaking down complex substances • Causes changes in the structure of active site • ...

Unit 02 2024-08-16

Unit 02 crossword puzzle
Across
  1. A way to show the number and type of atoms in a compound or a molecule with symbols and numbers.
  2. Formulas written on the left side of the yield ( → ) are the starting substances in a chemical reaction.
  3. states that mass cannot be created or destroyed.
  4. A change in which a substance (or substances) is changed into one or more new substances with different properties than the original substances.
Down
  1. Describes what happens in a chemical reaction. The equation identifies the starting materials (reactants) and resulting substances (product) in formula form.
  2. A small number that is written below the normal line of letters to show the number of atoms of each element is present in a substance.
  3. A number in front of any chemical formula in a chemical equation showing the number of molecules involved in the reaction.
  4. Two or more atoms joined together. The atoms can be the same element or different elements.
  5. Formulas written on the right side of the yield ( → ) are the new substances formed in a chemical reaction.
  6. A substance composed of two or more DIFFERENT element.

10 Clues: states that mass cannot be created or destroyed. • A substance composed of two or more DIFFERENT element. • Two or more atoms joined together. The atoms can be the same element or different elements. • A way to show the number and type of atoms in a compound or a molecule with symbols and numbers. • ...

Body Chemistry 2022-09-21

Body Chemistry crossword puzzle
Across
  1. Reaction that combines atoms to make larger.
  2. Fats used for Slow/Long Term Energy.
  3. Two or more elements/atoms making a compound.
  4. Matter changes form but NOT type.
  5. Matter changes for AND type.
  6. Molecules with No Carbon.
  7. Enzymes and other molecules build structures.
  8. Molecules with Carbon.
  9. Element used to make Proteins, 3.2%
  10. Element used for Growth, 65% in the Body
Down
  1. DNA and RNA used to carry genetic information.
  2. Building blocks of all matter.
  3. Reaction that breaks and creates bonds.
  4. Reaction that breaks molecules into smaller.
  5. Element of water/hydration, 9.5%
  6. Unique substance that cannot be broken down.
  7. Element determines Organic, 18.5%
  8. Sugars used for Fast Energy.

18 Clues: Molecules with Carbon. • Molecules with No Carbon. • Matter changes for AND type. • Sugars used for Fast Energy. • Building blocks of all matter. • Element of water/hydration, 9.5% • Matter changes form but NOT type. • Element determines Organic, 18.5% • Element used to make Proteins, 3.2% • Fats used for Slow/Long Term Energy. • Reaction that breaks and creates bonds. • ...

Bio 105 Chapter 6: Metabolism 2022-09-28

Bio 105 Chapter 6: Metabolism crossword puzzle
Across
  1. any nonprotein molecule or ion that is essential for an enzyme's proper function
  2. using an exergonic reaction to drive an endergonic reaction
  3. the ability to do work or cause change
  4. ____ work (e.g., moving molecules against a concentration gradient)
  5. break-down reaction (e.g., digestion)
  6. the study of energy transformations
Down
  1. an organic molecule serving as a cofactor
  2. a reaction where energy is released
  3. energy: energy of position
  4. a macromolecule that acts as a catalyst
  5. the total energy of a system
  6. no energy input is required
  7. ____ work (e.g., endergonic reactions)

13 Clues: energy: energy of position • no energy input is required • the total energy of a system • a reaction where energy is released • the study of energy transformations • break-down reaction (e.g., digestion) • the ability to do work or cause change • ____ work (e.g., endergonic reactions) • a macromolecule that acts as a catalyst • an organic molecule serving as a cofactor • ...

science cross word puzzel 2017-04-03

science cross word puzzel crossword puzzle
Across
  1. A chemical reaction that requires an input of energy and usually feels cold when it absorbs heat in the reaction.
  2. electrons on the outermost energy level of an atom that determine the reactivity of the atom.
  3. an interaction that holds atoms together.
Down
  1. states that matter is neither created nor destroyed in ordinary chemical and physical changes.
  2. Next
  3. horizontal row of elements on the Periodic Table that have the same number of electron shells.
  4. A chemical reaction in which heat is released and usually feels warm when the heat is released from the reaction.
  5. elements that have some properties of metals and non-metals and are found along the zigzag on the Periodic Table.
  6. vertical column of elements on the Periodic Table that have similar physical and chemical properties.

9 Clues: Next • an interaction that holds atoms together. • electrons on the outermost energy level of an atom that determine the reactivity of the atom. • states that matter is neither created nor destroyed in ordinary chemical and physical changes. • horizontal row of elements on the Periodic Table that have the same number of electron shells. • ...

Organic Chemistry Crosswords 2024-04-24

Organic Chemistry Crosswords crossword puzzle
Across
  1. Menthol is one example of compound with this functional group.
  2. Organic Chemistry is a study about ... - containing compound.
  3. A straight alkane with nine Carbon atoms.
  4. A reaction between something flammable and O2 gas.
  5. The category of hydrocarbon with one double-bond.
  6. By-product of esterification reaction.
  7. The smallest hydrocarbon.
  8. The most reactive halogen.
Down
  1. Addition reaction in which Bromine molecule is reacted with unsaturated compound.
  2. A process in chemical industry to turn long hydrocarbon into shorter ones.
  3. The addition reaction between alkene and water.
  4. The relation between Butane and 2-methylpropane.
  5. The scientific term for "Naming System".
  6. The amount of carbon present in 3-ethylhexane.
  7. The way to illustrate organic compounds with lines is called ... formula.
  8. The name of the product produced from a reaction between alcohol and carboxylic acid.

16 Clues: The smallest hydrocarbon. • The most reactive halogen. • By-product of esterification reaction. • The scientific term for "Naming System". • A straight alkane with nine Carbon atoms. • The amount of carbon present in 3-ethylhexane. • The addition reaction between alkene and water. • The relation between Butane and 2-methylpropane. • ...

Photosynthesis 2023-04-20

Photosynthesis crossword puzzle
Across
  1. the factories where photosynthesis takes place
  2. carries glucose to the plant
  3. sun energy
  4. the starting substances in a chemical reaction
  5. the ending substances in a chemical reaction
  6. process where green plants make food
Down
  1. rearrangement of atoms
  2. change in physical features
  3. contains chlorophyll

9 Clues: sun energy • contains chlorophyll • rearrangement of atoms • change in physical features • carries glucose to the plant • process where green plants make food • the ending substances in a chemical reaction • the factories where photosynthesis takes place • the starting substances in a chemical reaction

crossword 2021-04-21

crossword crossword puzzle
Across
  1. example of physical change
  2. acid + base
  3. milk of magnesia
  4. chemical name of baking soda
  5. high level of acid in clouds
  6. crystals of alum
Down
  1. burning of magnesium ribbon
  2. chemical change
  3. chemical change in plants
  4. citric acid
  5. turns red on reaction with base

11 Clues: citric acid • acid + base • chemical change • milk of magnesia • crystals of alum • chemical change in plants • example of physical change • burning of magnesium ribbon • chemical name of baking soda • high level of acid in clouds • turns red on reaction with base

SPELLING!!! 2017-11-01

SPELLING!!! crossword puzzle
Across
  1. Things that make up everything in the world
  2. Rhymes with lemperance
  3. A plan
  4. The interactions of substances
  5. What happens when you add a chemical and a chemical
  6. To be thankful for something
  7. The study of everything
  8. Doing things on your own
  9. Asking questions and wondering
Down
  1. An element that is subject to change
  2. Helps you think
  3. Existence or experience beyond the normal or physical level
  4. A math strategy
  5. A person who studies science
  6. A thing
  7. Something we do when we stop being angry at someone
  8. Everything
  9. Also known as grit
  10. The study of life
  11. Something you can touch
  12. The opposite of a solid

21 Clues: A plan • A thing • Everything • Helps you think • A math strategy • The study of life • Also known as grit • Rhymes with lemperance • The study of everything • Something you can touch • The opposite of a solid • Doing things on your own • A person who studies science • To be thankful for something • The interactions of substances • Asking questions and wondering • ...

How can I make new stuff from old stuff? 2023-01-20

How can I make new stuff from old stuff? crossword puzzle
Across
  1. how something smells
  2. 2 or more substances not chemically bonded
  3. Data using numbers
  4. old stuff in a reaction
  5. solid dissolving into a liquid
  6. property describing how things feel
  7. chemical reaction that makes heat
Down
  1. how much space something takes up
  2. Data using describing words (like color)
  3. Mass/volume
  4. new stuff in a reaction

11 Clues: Mass/volume • Data using numbers • how something smells • old stuff in a reaction • new stuff in a reaction • solid dissolving into a liquid • how much space something takes up • chemical reaction that makes heat • property describing how things feel • Data using describing words (like color) • 2 or more substances not chemically bonded

Chemical reactions 2025-12-04

Chemical reactions crossword puzzle
Across
  1. reaction gets warmer.
  2. Energy related to heat.
  3. A method that engineers use to make solutions
  4. The starting molecules in a chemical reaction.
  5. a characteristic of a substance
  6. A restriction placed on something.
  7. The molecules that are formed as a resullt of the reaction.
Down
  1. made of one type of material.
  2. a blend of two or more substances
  3. The rearrangment of molecules to make new molecules.
  4. A standard to which something is judged.
  5. reaction gets colder.

12 Clues: reaction gets warmer. • reaction gets colder. • Energy related to heat. • made of one type of material. • a characteristic of a substance • a blend of two or more substances • A restriction placed on something. • A standard to which something is judged. • A method that engineers use to make solutions • The starting molecules in a chemical reaction. • ...

Unit 1: Biomolecules 2022-12-08

Unit 1: Biomolecules crossword puzzle
Across
  1. breaks large molecules into small molecules (release of energy)
  2. large molecule made from smaller molecules
  3. chemical bond formed when electron(s)transfer from 1 atom to another
  4. 2 chemically bonded atoms
  5. force existing between molecules
  6. attraction between molecules of different substances
  7. molecules forming ionic hydrogen bond, attracts water
  8. outer/orbital shell of electron
  9. atom which gains or loses electrons
  10. based on observations
  11. reaction that changes one set of chemicals into another
  12. fatty acid containing carbons join by single bonds (fats/waxes)
  13. part of amino acid that is different (side chain)
  14. reaction that releases energy
  15. is dissolved
  16. attraction between molecules of same type of substance
  17. Law of Thermodynamics: every energy transfer increases the universe's entropy
  18. all components are equally distributed in a mixture
  19. caused by uneven electron distribution
  20. chemical bond formed when electrons are shared between atoms
  21. a type of variable where the factor is changed
  22. control the rate of reactions and regulate cell processes
  23. compound that forms OH- ions in a solution (higher pH)
  24. larger unit
  25. ___number: # of protons + neutrons in a nucleus
  26. Law of Thermodynamics: energy cannot be created or destroyed
  27. is dissolving
  28. ___number: # of protons in an atom
  29. fatty acid containing at least 1 double bond between carbon atoms (cooking oil)
  30. type of reasoning, apply general statements to specific facts
  31. source of energy and provides structure
  32. nonpolar molecule repels water
  33. synthesis/reaction building up molecules by loss of water
Down
  1. most basic unit of matter
  2. tested many times, results continue to support it (describes how phenomena occur)
  3. have 4 classes: carbohydrates, lipids, proteins, nucleic acids
  4. tendency of water to rise in a thin tube
  5. variable kept constant
  6. store energy and control steroids
  7. examples: DNA, RNA
  8. pure substance made up of atoms
  9. material of 2+ different elements physically (not chemically) mixed together
  10. substance that speeds up a reaction rate (lowers activation energy)
  11. based on numbers
  12. the ability to move/change matter
  13. element existing in 2+ forms (ex carbon, diamond)
  14. biological catalyst
  15. a type of variable where the change of a factor is being measured
  16. substance from 2+ diff elements in known proportions
  17. atoms of the same element but with different numbers of neutrons
  18. substance an enzyme acts on during a chemical reaction (specific ones for different enzymes)
  19. water mixed with undissolved material
  20. type of reasoning, general statements to specific facts
  21. force holding atoms together within a molecule
  22. weak acid/base which reacts with stronger ones to prevent sudden pH changes
  23. synthesis/reaction with addition of water to break up a compound
  24. attraction between hydrogen and other atom
  25. small unit
  26. creates large molecules from small molecules (use of energy)
  27. atom known as the backbone of macromolecules
  28. all the chemical reactions that occur within an organism to maintain life
  29. repeatedly tested and supported (explains/predicts phenomena)
  30. compound that forms H+ ions in a solution (lower pH)
  31. reaction that absorbs energy
  32. pocket in the fold of the enzymes

65 Clues: small unit • larger unit • is dissolved • is dissolving • based on numbers • examples: DNA, RNA • biological catalyst • based on observations • variable kept constant • most basic unit of matter • 2 chemically bonded atoms • reaction that absorbs energy • reaction that releases energy • nonpolar molecule repels water • pure substance made up of atoms • outer/orbital shell of electron • ...

Chem 2 Crossword 2023-12-20

Chem 2 Crossword crossword puzzle
Across
  1. A chemical containing hydrogens and carbon only.
  2. A chemical that follows the pattern CnH2n.
  3. A process that removes solids from liquids
  4. The source of the Earth's first atmosphere.
  5. A measure of how thick a liquid is.
  6. Water that is safe to drink.
  7. A chemical used for testing for C=C bonds.
  8. A chemical that follows the pattern CnH2n+2.
  9. A greenhouse gas with the equation CH4.
  10. A reaction that breaks down long hydrocarbons to shorter ones.
Down
  1. A way to reduce the amount of waste going to landfill.
  2. The process that removes salt from water.
  3. The type of fuel formed frmo ancient organisms.
  4. The type of distillation used to separate crude oil.
  5. The process performed by plants that removes CO2 from the atmosphere.
  6. A chemical with the formula C3H8.
  7. A chemical used to sterilise water.
  8. A rock formed from CO2 that was dissolved in oceans.
  9. The process that kills microorganisms in water supplys.
  10. A chemical with the formula C4H8.
  11. The type of waste that humans pollute water systes with.

21 Clues: Water that is safe to drink. • A chemical with the formula C3H8. • A chemical with the formula C4H8. • A chemical used to sterilise water. • A measure of how thick a liquid is. • A greenhouse gas with the equation CH4. • The process that removes salt from water. • A chemical that follows the pattern CnH2n. • A process that removes solids from liquids • ...

Chemical Reactions 2022-05-01

Chemical Reactions crossword puzzle
Across
  1. What is the common name of the brown oxide that forms on iron?
  2. Energy released into the atmosphere. _______ reaction.
  3. Atomic elements are placed in order of atomic N____.
  4. What gas is required for combustion?
  5. Which releases more energy, complete or incomplete combustion?
  6. Energy absorbed from the atmosphere. ________ reaction.
  7. Can atoms be made or destroyed in a chemical reaction?
  8. Subatomic particle with a neutral charge
  9. What black solid is a product of incomplete combustion?
Down
  1. Heat energy out. Bonds F______.
  2. What do we produce when we burn hydrogen?
  3. A biological catalyst.
  4. Subatomic particle with a negative charge
  5. The force that joins oppositely charged ions.
  6. Subatomic particle with a positive charge
  7. Heat energy in. Bonds B______.
  8. Speeds up the rate of a reaction.

17 Clues: A biological catalyst. • Heat energy in. Bonds B______. • Heat energy out. Bonds F______. • Speeds up the rate of a reaction. • What gas is required for combustion? • Subatomic particle with a neutral charge • What do we produce when we burn hydrogen? • Subatomic particle with a negative charge • Subatomic particle with a positive charge • ...

Crossword 2024-08-29

Crossword crossword puzzle
Across
  1. The shiny, strong crew of the periodic table, good at conducting heat and electricity—think of them as the tech-savvy heroes of chemistry.
  2. Substance: A chemical celebrity with no mix-ups—always consistent and true to its identity, like a one-ingredient recipe.
  3. Change: A complete makeover where substances transform into new substances—like a magical chemistry spell that creates something new.
  4. The number of bonds an atom can form, like the number of friends it can connect with—its social bonding capacity in the chemical world.
  5. A reaction that releases heat to its surroundings, making things warmer—like a chemical reaction that gives off a cozy glow.
  6. The invisible stuff that makes up everything around you—it's like the ultimate backstage pass to the universe!
  7. The process of separating solids from liquids, like using a sieve to catch the big bits while letting the liquid flow through.
  8. The basic building blocks of all substances, each with its own unique identity—think of them as the VIPs of the chemical world!
  9. The magic trick where a liquid turns into gas and disappears into the air—like watching a puddle vanish on a sunny day.
  10. The tiny, invisible building block of everything around you—like the smallest LEGO piece that creates the whole structure.
Down
  1. Gently pouring off the clear liquid from the top, leaving the solid behind—like serving clear broth without disturbing the sediment.
  2. A mix where you can see the distinct parts—like a tossed salad where every ingredient is still visible.
  3. Gases: The aloof elements that hang out alone, preferring not to react—like the cool kids who don’t need anyone else’s attention.
  4. An atom with a charge, either positive or negative—think of it as an atom with a bit of an electric personality!
  5. Change: A transformation that changes appearance or state but not the core identity—like ice melting into water without changing what it is.
  6. A reaction that soaks up heat from its surroundings, making things cooler—like a process that chills things out.
  7. The results of elements teaming up to form new substances, like a dynamic duo that creates a totally different story.
  8. A group of atoms with extra electrons, always eager for a reaction—like the thrill-seekers of the chemical world, always on the lookout for excitement!
  9. A blend where you can see the separate parts, like a colorful salad where you can spot every ingredient.

19 Clues: A mix where you can see the distinct parts—like a tossed salad where every ingredient is still visible. • A blend where you can see the separate parts, like a colorful salad where you can spot every ingredient. • The invisible stuff that makes up everything around you—it's like the ultimate backstage pass to the universe! • ...

Choice Board crossword 2021-09-29

Choice Board crossword crossword puzzle
Across
  1. the small number in an equation
  2. changes that make a new substance
  3. a reaction that takes in heat
  4. changes that keep the same substance
  5. group of atoms bonded together
Down
  1. smallest unit of matter
  2. the result of a chemical change
  3. a reaction that gives out heat
  4. the letters in the equation
  5. the best teacher in 8th grade

10 Clues: smallest unit of matter • the letters in the equation • a reaction that takes in heat • the best teacher in 8th grade • a reaction that gives out heat • group of atoms bonded together • the small number in an equation • the result of a chemical change • changes that make a new substance • changes that keep the same substance

unit 6a 2017-04-06

unit 6a crossword puzzle
Across
  1. A chemical bond is a lasting attraction between atoms that enables the formation of chemical compounds.
  2. The alkali metals are a group of elements in the periodic table.
  3. An electron in an outer shell of an atom that can participate in forming chemical bonds with other atoms.
  4. A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulas.
Down
  1. Physical changes occur when objects or substances undergo a change that changes the physical form of a composition but not the chemical composition.
  2. the result of a chemical reaction.
  3. The law of conservation of mass or principle of mass conservation states that for any system closed to all transfers of matter and energy,
  4. Chemical changes occur when a substance combines with another to form a new substance, called synthesis
  5. a substance that takes part in and undergoes change during a reactio
  6. The noble gases make a group of chemical elements with similar properties.
  7. A chemical formula is a way of expressing information about the proportions of atoms that constitute a particular chemical compound, using a single line of chemical element

11 Clues: the result of a chemical reaction. • The alkali metals are a group of elements in the periodic table. • a substance that takes part in and undergoes change during a reactio • The noble gases make a group of chemical elements with similar properties. • A chemical bond is a lasting attraction between atoms that enables the formation of chemical compounds. • ...

Chapter 6 and 7 vocabulary words 2022-11-09

Chapter 6 and 7 vocabulary words crossword puzzle
Across
  1. - a mixture of two or more elements, at least one of which is a metal, that has the characteristic properties of a metal
  2. equation - a representation of a chemical reaction in which the reactants and products are expressed as formulas
  3. dot diagram - a diagram of an atom, ion or molecule in which each dot represents a valence electron
  4. formula - notation that shows what elements a compound contains and the ratio of the atoms or ions of these elements in the compound
  5. - a substance that undergoes change in a chemical reaction
  6. energy - the energy stored in chemical bonds
  7. - an atom or group of atoms that has a positive or negative charge
Down
  1. - new substances formed as a result of a chemical reaction
  2. - a neutral group of atoms that are joined together by one or more covalent bonds
  3. bond - the force that holds cations and anions together
  4. bond - the force that holds atoms or ions together as a unit
  5. bond - a chemical bond in which two atoms share a pair of valence electrons
  6. bond - the attraction between a metal cation and the shared electrons that surround it

13 Clues: energy - the energy stored in chemical bonds • bond - the force that holds cations and anions together • - new substances formed as a result of a chemical reaction • - a substance that undergoes change in a chemical reaction • bond - the force that holds atoms or ions together as a unit • - an atom or group of atoms that has a positive or negative charge • ...

Grace's Crossword Puzzle 2026-02-27

Grace's Crossword Puzzle crossword puzzle
Across
  1. A scientific vocabulary for a chemical reaction that releases heat energy to the surrounding environment
  2. The raw materials in a chemical reaction
  3. A property of substances that break when bent or hit
  4. An element in the periodic table with an element symbol of F
  5. A compound of one hydrogen atom and one chlorine atom
  6. A substance which is made of two or more elements that are chemically bonded together
  7. A law that states that in any closed system, matter is neither created nor destroyed during a chemical reaction or a physical reaction
  8. A scientific vocabulary for a chemical reaction that absorbs heat energy from the surrounding environment
  9. Synonym of the outermost shell in atoms
  10. The burning of a substance in the presence of oxygen
  11. An uncharged subatomic particle
  12. Two substances are formed during combustion, which are water and _____________.
  13. Set group of two or more atoms joined together
  14. Elements that exist as one atom
  15. A subatomic particle that has the same mass as the neutron
Down
  1. A compound of two hydrogen atoms, one sulfur atom and four oxygen atoms
  2. A property of substances that can be hammered or bent into different shapes without shattering
  3. The temperature at which a substance melts
  4. The new substances created after the reaction has occured
  5. The rows in the periodic table
  6. A Danish physicist that developed the Nuclear Model in 1913
  7. The columns in the periodic table
  8. The creator of the periodic table
  9. Three things that are required for combustion to happen is oxygen, heat, ____.
  10. A scientific vocabulary for fizzing or bubbling
  11. contains different kinds of atoms jumbled up but not joined together
  12. An element in the periodic table with an element symbol of C
  13. Physical changes are often easily _________.
  14. A ceramic container in which metal or other substances can be melted into very high temperatures
  15. Breaking down complex substances into simpler substances
  16. ___ substances are formed
  17. A substance that can't be broken down into any other substances
  18. The simplest particle of matter, which we think of as being like a tiny ball
  19. The direction of the first electron in each shell
  20. Elements that exist as two atoms
  21. A subatomic particle that its mass is usually treated as zero
  22. Elements in group 0 of the periodic table that are nonreactive due to their complete valence shells
  23. Different atoms of the same element that contain the same number of protons but a different number of neutrons
  24. Scientific vocabulary for nonreactive
  25. An element in the periodic table with an element symbol of K

40 Clues: ___ substances are formed • The rows in the periodic table • An uncharged subatomic particle • Elements that exist as one atom • Elements that exist as two atoms • The columns in the periodic table • The creator of the periodic table • Scientific vocabulary for nonreactive • Synonym of the outermost shell in atoms • The raw materials in a chemical reaction • ...

Enzymes 2024-04-09

Enzymes crossword puzzle
Across
  1. the part of an enzyme has a specific shape into which the substrate(s) fit exactly
  2. At higher substrate concentrations, increasing the amount of substrate cannot increase the rate of reaction as active sites of enzyme molecules are _________.
  3. in the ‘____ ___ ___’ hypothesis, the substrate is the “key”, while the enzyme is the “lock”
  4. As temperature increases, enzyme and substrate gain _______ ______ and they collide more often, increasing the formation of enzyme substrate complex thus increase rate of reaction. Rate of reaction doubles with every 10°C rise in temperature.
  5. the substrate binds to the active site of the enzyme, forming an ______-_________ _______
  6. the shape of the substrate is _____________ to the shape of the active site of the enzyme
Down
  1. Denaturation is ____________ even when temperature is lowered. At extremely high temperatures, the enzyme is completely denatured and the rate of reaction drops to zero.
  2. At low temperatures, enzymes are ________ and the rate of reaction is low. Substrate and enzyme molecules have little kinetic energy, hence the
  3. enzymes are biological catalysts that speed up the rate of chemical reactions by lowering the __________ ______ of a chemical reaction, without being chemically altered in the reaction
  4. of collision is low. In addition, most substrate molecules do not contain sufficient energy to overcome the activation energy required to
  5. As temperature increases beyond optimum temperature, enzyme is _________. The enzyme loses its 3D shape and active site is unable to bind to the substrate. Rate of reaction thus decreases.
  6. enzymes are required in _____ _______ because they remain chemically unchanged in the reactions they catalyse and can be reused
  7. a reaction.
  8. Reaction rate is its maximum at enzyme _______ temperature/pH.

14 Clues: a reaction. • Reaction rate is its maximum at enzyme _______ temperature/pH. • the part of an enzyme has a specific shape into which the substrate(s) fit exactly • the substrate binds to the active site of the enzyme, forming an ______-_________ _______ • the shape of the substrate is _____________ to the shape of the active site of the enzyme • ...

Science 2025-07-21

Science crossword puzzle
Across
  1. the process in which plant converts light energy into chemical energy
  2. a reaction where a single compound breaks down into two or more simpler substances
  3. the substances that are combined or transformed in a chemical reaction
  4. the substances that are formed in chemical equation
Down
  1. the process of breaking down glucose to release energy
  2. the bending of light from one medium to another
  3. the bouncing back of light
  4. reaction a reaction where two or more substances combine to form a single product

8 Clues: the bouncing back of light • the bending of light from one medium to another • the substances that are formed in chemical equation • the process of breaking down glucose to release energy • the process in which plant converts light energy into chemical energy • the substances that are combined or transformed in a chemical reaction • ...

Biology 2025-10-16

Biology crossword puzzle
Across
  1. Energy for all living organisms
  2. All ecosystems on earth
  3. a substance speeds a chemical reaction without using itself up
  4. An organelle found in plant and eukaryotic organisms
  5. A region with different animals and plant groups that adapt
  6. Protein that increases chemical reaction without changing
Down
  1. The atraction of unlike molecules Capillary action
  2. Contains nucleus and membrane bound organelles
  3. Makes a enzyme act
  4. The unit structure found in all living organisms
  5. Atraction of like molecules surface tension
  6. Apparatus Shipping out and packaging lipids and proteins

12 Clues: Makes a enzyme act • All ecosystems on earth • Energy for all living organisms • Atraction of like molecules surface tension • Contains nucleus and membrane bound organelles • The unit structure found in all living organisms • The atraction of unlike molecules Capillary action • An organelle found in plant and eukaryotic organisms • ...

CHEMICAL REACTIONS 2012-10-21

CHEMICAL REACTIONS crossword puzzle
Across
  1. A soluble substance is said to be ...............
  2. A substance produced by a chemical reaction
  3. Insoluble product of two soluble ionic solutions
  4. Does not dissolve
  5. Substances which dissolve in water are said to be ............
  6. A type of chemical reaction where a substance burns in oxygen to produce heat and light
Down
  1. An abbreviation for oxidation and reduction pairs of reactions
  2. Technique to reduce the ions of reactive metals by using an electric current to force ions onto the ions
  3. The metal that loses its electrons most readily
  4. Positively charged ion
  5. Naturally occuring catalyst
  6. Chemical method of extracting a metal from its ore by heating (often with reducing agent)

12 Clues: Does not dissolve • Positively charged ion • Naturally occuring catalyst • A substance produced by a chemical reaction • The metal that loses its electrons most readily • Insoluble product of two soluble ionic solutions • A soluble substance is said to be ............... • An abbreviation for oxidation and reduction pairs of reactions • ...

Haley Johnson - Ch. 13 2021-02-16

Haley Johnson - Ch. 13 crossword puzzle
Across
  1. another name for bond energy
  2. a reaction that has a net absorption of energy
  3. AB+C -> AC+B
  4. AB -> A+B
  5. AB+oxygen -> oxides
Down
  1. AB+CD -> AD+BC
  2. what speeds up a chemical reaction, excluding an exothermic reaction
  3. no atoms are gained or lost during any reaction
  4. A+B -> AB
  5. a reaction that has a net release of energy

10 Clues: A+B -> AB • AB -> A+B • AB+C -> AC+B • AB+CD -> AD+BC • AB+oxygen -> oxides • another name for bond energy • a reaction that has a net release of energy • a reaction that has a net absorption of energy • no atoms are gained or lost during any reaction • what speeds up a chemical reaction, excluding an exothermic reaction

chp 4 2016-11-21

chp 4 crossword puzzle
Across
  1. replacement reaction- one element is replaced from one in a compound
  2. what is causing something else to be dissolved
  3. Equation- Balanced chemical reaction with compounds and states
  4. making something else weaker
  5. AB----> A+B
  6. A+B---> AB
  7. the thing that limits the amount of product that can be made
Down
  1. no ions present, light bulb doesn't light up
  2. reactions- a specific type of a double replacement reaction
  3. - A+BC----> AC+B
  4. what is being dissolved
  5. Electrolyte- few ions present,ionic compound that only ionizes partially, and the light bulb is barely lit
  6. ions- ions that do not participate in reaction/stays as dissolved ions
  7. becoming a part of another substance ex. Sugar in water
  8. Electrolyte- many ions present, ionic compounds in water that ionizes completely, and the light bulb would be brightly lit
  9. ionic equation- shows only participating ions
  10. when solvent molecules interact/surround with solute ions
  11. replacement reaction- AB+ CD---> AD+BC
  12. the symbol is M
  13. short for stoichiometry
  14. atom/molecule with a charge based on the gain or loss of electrons

21 Clues: A+B---> AB • AB----> A+B • the symbol is M • - A+BC----> AC+B • what is being dissolved • short for stoichiometry • making something else weaker • replacement reaction- AB+ CD---> AD+BC • no ions present, light bulb doesn't light up • ionic equation- shows only participating ions • what is causing something else to be dissolved • ...

Chapter 5 Key Terms Crossword Review 2025-12-08

Chapter 5 Key Terms Crossword Review crossword puzzle
Across
  1. ATP reaction to move motor proteins
  2. ATP reaction where reactants form a product
  3. Used to power reactions
  4. Type of diffusion that moves higher concentration of solute to lower
  5. Type of passive transport where something diffuses across a membrane
  6. Lowers required energy for reactions
  7. ATP with one less phosphate
  8. Reaction that builds
  9. ATP reaction where ATP uses one of its phosphates to make a transport protein change form
  10. Materials move through this to get into the cell
Down
  1. Materials move through a permeable membrane to an area of higher concentration
  2. Relays a message to change something in the cell
  3. Depending on what form of transport is used, move either up or down this
  4. One of these breaks off in most ATP reactions
  5. Type of transport, move materials using ATP
  6. Type of transport moving down the gradient
  7. Not the powerhouse of the cell, produces ATP
  8. What happens to enzymes when they get to an extreme PH or temp
  9. Reaction that breaks
  10. A ton of molecules in water

20 Clues: Reaction that breaks • Reaction that builds • Used to power reactions • ATP with one less phosphate • A ton of molecules in water • ATP reaction to move motor proteins • Lowers required energy for reactions • Type of transport moving down the gradient • ATP reaction where reactants form a product • Type of transport, move materials using ATP • ...

109 2025-08-21

109 crossword puzzle
Across
  1. Bond formed by shared electrons
  2. Material’s opposition to current
  3. Bending of waves around edges
  4. Property opposing change in current
  5. Acceleration of a chemical reaction
  6. Opposition in an AC circuit
  7. Heat transfer through contact
  8. Semiconductor switching device
  9. Converts AC to DC
  10. Reaction that releases heat
  11. Energy transfer by waves
  12. Resistance to change in motion
  13. Height of a wave
  14. Intermediate electrical conductor
Down
  1. Mass per unit volume
  2. Number of cycles per second
  3. Loss of electrons in a reaction
  4. Reaction that absorbs heat
  5. Ability to store electric charge
  6. Mass times velocity
  7. Allows current in one direction
  8. Emission of electrons by light
  9. Circuit that produces a repeating signal
  10. Material with zero electrical resistance
  11. Band of colors or frequencies
  12. Basic on the pH scale
  13. Separation by boiling point
  14. Heat transfer by fluid motion
  15. Measured addition to find concentration
  16. Same protons, different neutrons
  17. Distance between wave peaks
  18. Rate at which work is done
  19. Upthrust in a fluid
  20. Gain of electrons in a reaction
  21. Force over distance

35 Clues: Height of a wave • Converts AC to DC • Mass times velocity • Upthrust in a fluid • Force over distance • Mass per unit volume • Basic on the pH scale • Energy transfer by waves • Reaction that absorbs heat • Rate at which work is done • Number of cycles per second • Separation by boiling point • Opposition in an AC circuit • Distance between wave peaks • Reaction that releases heat • ...

109 2025-08-21

109 crossword puzzle
Across
  1. Energy transfer by waves
  2. Mass times velocity
  3. Reaction that releases heat
  4. Property opposing change in current
  5. Distance between wave peaks
  6. Intermediate electrical conductor
  7. Basic on the pH scale
  8. Emission of electrons by light
  9. Material’s opposition to current
  10. Rate at which work is done
  11. Heat transfer through contact
  12. Allows current in one direction
  13. Semiconductor switching device
  14. Acceleration of a chemical reaction
  15. Bending of waves around edges
  16. Number of cycles per second
  17. Heat transfer by fluid motion
  18. Upthrust in a fluid
  19. Band of colors or frequencies
  20. Loss of electrons in a reaction
Down
  1. Ability to store electric charge
  2. Height of a wave
  3. Measured addition to find concentration
  4. Resistance to change in motion
  5. Opposition in an AC circuit
  6. Separation by boiling point
  7. Bond formed by shared electrons
  8. Mass per unit volume
  9. Gain of electrons in a reaction
  10. Same protons, different neutrons
  11. Reaction that absorbs heat
  12. Circuit that produces a repeating signal
  13. Force over distance
  14. Material with zero electrical resistance

34 Clues: Height of a wave • Mass times velocity • Force over distance • Upthrust in a fluid • Mass per unit volume • Basic on the pH scale • Energy transfer by waves • Rate at which work is done • Reaction that absorbs heat • Reaction that releases heat • Opposition in an AC circuit • Separation by boiling point • Distance between wave peaks • Number of cycles per second • ...

Crossword 2024-08-29

Crossword crossword puzzle
Across
  1. The shiny, strong crew of the periodic table, good at conducting heat and electricity—think of them as the tech-savvy heroes of chemistry.
  2. Substance: A chemical celebrity with no mix-ups—always consistent and true to its identity, like a one-ingredient recipe.
  3. Change: A complete makeover where substances transform into new substances—like a magical chemistry spell that creates something new.
  4. The number of bonds an atom can form, like the number of friends it can connect with—its social bonding capacity in the chemical world.
  5. A reaction that releases heat to its surroundings, making things warmer—like a chemical reaction that gives off a cozy glow.
  6. The invisible stuff that makes up everything around you—it's like the ultimate backstage pass to the universe!
  7. The process of separating solids from liquids, like using a sieve to catch the big bits while letting the liquid flow through.
  8. The basic building blocks of all substances, each with its own unique identity—think of them as the VIPs of the chemical world!
  9. The magic trick where a liquid turns into gas and disappears into the air—like watching a puddle vanish on a sunny day.
  10. The tiny, invisible building block of everything around you—like the smallest LEGO piece that creates the whole structure.
Down
  1. Gently pouring off the clear liquid from the top, leaving the solid behind—like serving clear broth without disturbing the sediment.
  2. A mix where you can see the distinct parts—like a tossed salad where every ingredient is still visible.
  3. Gases: The aloof elements that hang out alone, preferring not to react—like the cool kids who don’t need anyone else’s attention.
  4. An atom with a charge, either positive or negative—think of it as an atom with a bit of an electric personality!
  5. Change: A transformation that changes appearance or state but not the core identity—like ice melting into water without changing what it is.
  6. A reaction that soaks up heat from its surroundings, making things cooler—like a process that chills things out.
  7. The results of elements teaming up to form new substances, like a dynamic duo that creates a totally different story.
  8. A group of atoms with extra electrons, always eager for a reaction—like the thrill-seekers of the chemical world, always on the lookout for excitement!
  9. A blend where you can see the separate parts, like a colorful salad where you can spot every ingredient.

19 Clues: A mix where you can see the distinct parts—like a tossed salad where every ingredient is still visible. • A blend where you can see the separate parts, like a colorful salad where you can spot every ingredient. • The invisible stuff that makes up everything around you—it's like the ultimate backstage pass to the universe! • ...

Chemistry 2021-02-10

Chemistry crossword puzzle
Across
  1. A colored substance used to color materials like fabric
  2. Giving off a type of energy that can be dangerous to humans
  3. A substance people used to think was escaping a material substance as it burned or rusted
  4. A process that produces a new element by changing the number of protons in an atom's nucleus
  5. Any substance that cleans
  6. A single type of molecule made of more than one type of atom
  7. A chemical that fabric was soaked in to prevent its color from fading
  8. Aristotle's fifth element that he thought composed the heavenly bodies
Down
  1. Man-made
  2. A process where oxygen combines with a substance
  3. A substance to be burned that will produce energy, like wood or paper
  4. The Law of Conservation of ____ says that substances in a chemical reaction are neither created nor destroyed.
  5. A chemical ___ is the changing of a substance into a new substance.
  6. Burning
  7. Water that has high amounts of calcium, magnesium, and/or iron
  8. A chemical found in wood ash used to make soap

16 Clues: Burning • Man-made • Any substance that cleans • A chemical found in wood ash used to make soap • A process where oxygen combines with a substance • A colored substance used to color materials like fabric • Giving off a type of energy that can be dangerous to humans • A single type of molecule made of more than one type of atom • ...

Matter Cycling and Photosynthesis J.R. 2026-03-16

Matter Cycling and Photosynthesis J.R. crossword puzzle
Across
  1. a solid dissolves in a liquid, the solid breaks apart into particles too small to see and it mixes completely in the liquid
  2. made of more than one atom connected together
  3. the new substances that are produced from a chemical reaction
  4. really small particles that can't be divided or destroyed in chemical reactions or through phase changes
  5. is any material that is biodegradable and comes from either a plant
  6. organisms that hunt and kill other organisms for food
  7. group of aquatic organisms that have the ability to condcut photosynthesis
Down
  1. an organism that feeds mostly on plants
  2. an organism that eats plants and animals
  3. matter that has come from a recently living organism
  4. substances that contain only one kind of particle
  5. a living thing that is too small to be seen with the naked eye microbe
  6. an organism that mostly eats meat, or the flesh of animals
  7. reaction a chemical change that occurs when two or more substances combine to form a new substance
  8. anything that takes up space and can be weighed
  9. aniamls that are killed and eaten by other animals

16 Clues: an organism that feeds mostly on plants • an organism that eats plants and animals • made of more than one atom connected together • anything that takes up space and can be weighed • substances that contain only one kind of particle • aniamls that are killed and eaten by other animals • matter that has come from a recently living organism • ...

Natural science 2024-06-26

Natural science crossword puzzle
Across
  1. mixture a mixture in which the different components can be distinguished.
  2. circuit a closed path through which electricity flows.
  3. current the flow of electrical charges through materials.
  4. the force of attraction exerted by magnets.
  5. a method used to separate substances of different density in heterogeneous mixtures.
  6. mixture a mixture in which the different components cannot be distinguished.
Down
  1. the component of an electric circuit which transforms electricity into another type of energy.
  2. a method used to separate solids from liquids, or solids with different size particles, in heterogeneous mixtures.
  3. a chemical reaction that happens in some living things, such as yeast and bacteria.
  4. substance a type of matter which contains only one type of component.
  5. another word for a homogeneous mixture.
  6. a method used to separate liquids that have different boiling points in homogeneous mixtures.
  7. the component of an electric circuit which provides the electricity.
  8. a connecting wire, usually made of copper, wrapped in plastic covering. chemical reactions these happen when atoms react and group together differently. combustion a chemical reaction that happens when objects or substances are burned. compass a device with a magnetic needle that always points north. We use it to orient ourselves.
  9. a type of matter which contains two or more pure substances.
  10. an object which can attract other objects made of iron and other magnetic metals.
  11. a method used to separate solids from liquids in homogeneous mixtures.
  12. a material which allows electrical charges to move.
  13. a material which does not allow electrical charges to move.
  14. a chemical reaction that happens when some metal substances such as iron combine with oxygen in the presence of water.

20 Clues: another word for a homogeneous mixture. • the force of attraction exerted by magnets. • a material which allows electrical charges to move. • circuit a closed path through which electricity flows. • current the flow of electrical charges through materials. • a material which does not allow electrical charges to move. • ...

Chapter 8 Reading Guide 2021-11-14

Chapter 8 Reading Guide crossword puzzle
Across
  1. A protein that acts as a catalyst in living organisms. The specificity of an enzyme results from its shape, which results from amino acid sequence.
  2. an energy form a body possess based on its position relative to others, or structure. Ex: water behind a dam or mole of glucose.
  3. A form of work which pumps substances across membranes against the direction of spontaneous movement. Ex: sodium-potassium pump
  4. Where there is a large concentration of oxygen (lungs or gills), hemoglobin's affinity for oxygen increases as more binding/active sites are filled.
  5. Due to the entry of the substrate, the change in space of the active site of an enzyme so that it binds/fits more snugly to the substrate.
  6. A form of work which pushes endergonic reactions that would not occur spontaneously. Ex: synthesis of monomers to polymers.
  7. A site that has an indentation on the surface of the enyme where catalysis occurs
  8. A human enzyme that functions well in pH 2 and is found in the human stomach.
  9. Providing a favourable micro-_____
  10. The regulation or binding of a regulatory molecule to a protein at one site that affects the function of the protein at a different site. This is similar to the noncompetitive inhibitor as it may inhibit enzyme activity but different in the way it stimulates enzyme activity. The binding of an activator stablizies the active form of the enzyme, whereas the binding of an inhibitor stabilizes the inactive.
  11. If energy is released, the change in free energy is ____.
  12. Direct ________ of the active site in the chemical reaction is another mechanism of catalysis
  13. Proper _______ of the substrate
  14. entirety of an organism's chemical reactions, manages the material and energy resources of a cell
  15. A chemical agent that increases the rate of reaction without being consumed.
  16. A type of inhibitor that reduces the activity of an enzyme by entering the active site in place of the substrate.
  17. This is the use of energy released from an exergonic reaction to drive an endergonic reaction. In many cellular reactions, a phosphate group is transferred from ATP to some other molecule in order to make the second molecule less stable. The second molecule is said to be a phosphorylated intermediate. If you couldn't regenerate ATP by phosphorylation ADP, you would need to consume nearly your body weight in ATP each day.
  18. reactions that consume energy, build larger molecules, include photosynthesis, are considered "uphill"
Down
  1. a reaction where the change in free energy is positive. These also typically possess an additional driving force. This includes photosynthesis which is primarily driven by sunlight.
  2. A type of energy which is the portion of an entire system's energy that can perform work when pressure and temp. are uniform throughout the system. Symbol: the letter 'G'. For an exergonic reaction, delta g is negative as it experiences a net release of free energy.
  3. A process that utilizes water to breakdown compounds. Is responsible for breaking down ATP.
  4. transition slates by straining the substrate bonds
  5. The rate of an enzymatic reaction increases with increasing temperature, partly because substrates collide with active sites more frequently with more kinetic energy. Each enzyme works better under some conditions than others. Extremes of pH or temperatures can influence a protein's structure.
  6. initial ______ of substrate: frequently access the active sites of the enzyme molecules
  7. Reactants that bind to an enzyme.
  8. Is an organic molecule serving as a cofactor, most vitamins are coenzymes in metabolic reactions.
  9. Is a nonprotein molecule or ion that is required for the proper functioning of an enzyme. They are permanently bound to an active site or may bind loosely and reversibly, along with the substrate during catalysis.
  10. an energy form associated with the motion of bodies. Is a function of the work done on objects.
  11. a reaction where the change in free energy is negative. Indicating a spontaneous reaction. This includes cellular respiration where delta g for this reaction is approximately -686 kcal/mol.
  12. The optimal pH values for most enzymes are within 6-8
  13. The amount of energy that reactants must absorb before a chemical reaction will start.
  14. A type of inhibitor or substance that reduce the activity of an enzyme by binding to a location remote from the active site, changing the enzyme's shape so that the active site no longer effectively catalyzes the conversion of substrate to produce.
  15. reactions release energy, break down molecules, require enzymes to catalyze reactions, includes cellular respiration, are considered "downhill".
  16. A form of work that involves physical processes. Ex: Contraction of muscle cells
  17. When the terminal phosphate bond is broken, a molecule of inorganic phosphate P is formed, and energy is... For this reaction: ATP = ADP + P and Delta G = -7.3 (exergonic)
  18. Materials resulting from chemical reactions.
  19. Consists of adenosine triphosphate. With the sugar ribose, nitrogenous base adenine and three phosphate groups bonded to it.

37 Clues: Proper _______ of the substrate • Reactants that bind to an enzyme. • Providing a favourable micro-_____ • Materials resulting from chemical reactions. • transition slates by straining the substrate bonds • The optimal pH values for most enzymes are within 6-8 • If energy is released, the change in free energy is ____. • ...

Ch 6&7 vocab 2022-11-09

Ch 6&7 vocab crossword puzzle
Across
  1. - a mixture of two or more elements, at least one of which is a metal, that has the characteristic properties of a metal
  2. equation - a representation of a chemical reaction in which the reactants and products are expressed as formulas
  3. dot diagram - a diagram of an atom, ion or molecule in which each dot represents a valence electron
  4. formula - notation that shows what elements a compound contains and the ratio of the atoms or ions of these elements in the compound
  5. - a substance that undergoes change in a chemical reaction
  6. energy - the energy stored in chemical bonds
  7. - an atom or group of atoms that has a positive or negative charge
Down
  1. - new substances formed as a result of a chemical reaction
  2. - a neutral group of atoms that are joined together by one or more covalent bonds
  3. bond - the force that holds cations and anions together
  4. bond - the force that holds atoms or ions together as a unit
  5. bond - a chemical bond in which two atoms share a pair of valence electrons
  6. bond - the attraction between a metal cation and the shared electrons that surround it

13 Clues: energy - the energy stored in chemical bonds • bond - the force that holds cations and anions together • - new substances formed as a result of a chemical reaction • - a substance that undergoes change in a chemical reaction • bond - the force that holds atoms or ions together as a unit • - an atom or group of atoms that has a positive or negative charge • ...

Chapter 6/7 2023-03-28

Chapter 6/7 crossword puzzle
Across
  1. - a mixture of two or more elements, at least one of which is a metal, that has the characteristic properties of a metal
  2. equation - a representation of a chemical reaction in which the reactants and products are expressed as formulas
  3. dot diagram - a diagram of an atom, ion or molecule in which each dot represents a valence electron
  4. formula - notation that shows what elements a compound contains and the ratio of the atoms or ions of these elements in the compound
  5. - a substance that undergoes change in a chemical reaction
  6. energy - the energy stored in chemical bonds
  7. - an atom or group of atoms that has a positive or negative charge
Down
  1. - new substances formed as a result of a chemical reaction
  2. - a neutral group of atoms that are joined together by one or more covalent bonds
  3. bond - the force that holds cations and anions together
  4. bond - the force that holds atoms or ions together as a unit
  5. bond - a chemical bond in which two atoms share a pair of valence electrons
  6. bond - the attraction between a metal cation and the shared electrons that surround it

13 Clues: energy - the energy stored in chemical bonds • bond - the force that holds cations and anions together • - new substances formed as a result of a chemical reaction • - a substance that undergoes change in a chemical reaction • bond - the force that holds atoms or ions together as a unit • - an atom or group of atoms that has a positive or negative charge • ...

Atomic Structure 2024-05-05

Atomic Structure crossword puzzle
Across
  1. structure A diagram showing the arrangement of atoms and bonds in a molecule
  2. The sum of protons and neutrons in an atom
  3. Atoms of the same element with different numbers of neutrons
  4. electron Electrons in the outermost energy level that participate in bonding
  5. A substance that donates hydrogen ions in a chemical reaction
  6. A substance that accepts hydrogen ions in a chemical reaction
  7. A positively charged particle in the nucleus
  8. A fundamental building block of protons and neutrons
  9. The central, positively charged core of the atom
  10. The number of protons in an atom
Down
  1. A noble gas element with no chemical reactivity
  2. A division of an orbital with a specific energy level
  3. The region around the nucleus where electrons are likely to be found
  4. A negatively charged particle that moves around the nucleus
  5. level A specific energy level in an atom
  6. theory A theory used to predict the shapes of molecules
  7. A particle with no charge found in the nucleus

17 Clues: The number of protons in an atom • level A specific energy level in an atom • The sum of protons and neutrons in an atom • A positively charged particle in the nucleus • A particle with no charge found in the nucleus • A noble gas element with no chemical reactivity • The central, positively charged core of the atom • ...

Y8 Revision crossword 2024-05-16

Y8 Revision crossword crossword puzzle
Across
  1. - Substances that start a chemical reaction.
  2. - The rate of change of velocity per unit of time. It can involve an increase or decrease in speed and/or a change in direction.
  3. - The reaction between an acid and a base to form water and a salt.
  4. - The speed of an object in a specific direction. It is a vector quantity and includes both magnitude and direction.
  5. Reactions - Processes that involve the rearrangement of atoms to form new substances.
  6. - Groups of atoms bonded together, representing the smallest fundamental unit of a chemical compound.
  7. - Substances formed when two or more elements are chemically bonded together.
  8. - The basic units of matter.
  9. Scale - A measure of how acidic or basic a solution is, ranging from 0 to 14.
  10. - An influence that can change the motion of an object or produce motion in a stationary object. It is measured in newtons (N).
  11. - Pure substances consisting of only one type of atom.
  12. - Substances that are produced by a chemical reaction.
Down
  1. - The force that opposes the motion of an object when it is in contact with another surface. It can slow down or stop the movement of objects.
  2. - Substances that release hydroxide ions (OH⁻) in solution and have a pH greater than 7.
  3. - A combination of two or more substances that are not chemically bonded.
  4. - Substances that change color in response to a change in pH.
  5. - Substances that release hydrogen ions (H⁺) in solution and have a pH less than 7.
  6. Table - A chart that organizes all known elements by their properties.
  7. - The distance traveled per unit of time. It is a scalar quantity and is usually measured in meters per second (m/s).

19 Clues: - The basic units of matter. • - Substances that start a chemical reaction. • - Pure substances consisting of only one type of atom. • - Substances that are produced by a chemical reaction. • - Substances that change color in response to a change in pH. • - The reaction between an acid and a base to form water and a salt. • ...

Unit 6B vocab 2017-04-09

Unit 6B vocab crossword puzzle
Across
  1. The alkali metals are a group of elements in the periodic table They are all in the
  2. A chemical formula is a way of expressing information about the proportions of atoms that constitute a particular chemical compound, using a single line of chemical element symbols, numbers, and sometimes also other symbols, such as parentheses, dashes, brackets, commas and plus (+) and minus (−) signs
  3. A chemical bond is a lasting attraction between atoms that enables the formation of chemical compounds
  4. The law of conservation of mass or principle of mass conservation states that for any system closed to all transfers of matter and energy, the mass of the system must remain constant over time, as system mass cannot change quantity if it is not added or removed Hence, the quantity of mass is "conserved" over time
  5. a substance that takes part in and undergoes change during a reaction
Down
  1. Physical changes occur when objects or substances undergo a change that changes the physical form of a composition but not the chemical composition
  2. A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulas
  3. An electron in an outer shell of an atom that can participate in forming chemical bonds with other atoms
  4. Chemical changes occur when a substance combines with another to form a new substance, called synthesis or, alternatively, decomposes into two or more different substances These processes are called chemical reactions and, in general, are not reversible except by further chemical reactions
  5. column of the periodic table They are extremely reactive
  6. the result of a chemical reaction

11 Clues: the result of a chemical reaction • column of the periodic table They are extremely reactive • a substance that takes part in and undergoes change during a reaction • The alkali metals are a group of elements in the periodic table They are all in the • A chemical bond is a lasting attraction between atoms that enables the formation of chemical compounds • ...

Unit 7 2023-05-16

Unit 7 crossword puzzle
Across
  1. A small unit of measurement
  2. A kind of chemical reaction that gets rid of somehting
  3. The part of the equation that reacts to form a product
Down
  1. A kind of chemical reaction that will replace one or more reactants
  2. The littler number below the base
  3. What results from a reaction
  4. A kind of chemical reaction that creates

7 Clues: A small unit of measurement • What results from a reaction • The littler number below the base • A kind of chemical reaction that creates • A kind of chemical reaction that gets rid of somehting • The part of the equation that reacts to form a product • A kind of chemical reaction that will replace one or more reactants

8 - Periodic Table v2021-03-26 2021-03-26

8 - Periodic Table v2021-03-26 crossword puzzle
Across
  1. Last group on the Periodic Table
  2. Chemical name for common salt.
  3. Elements on the left hand side of the Periodic Table
  4. Name of group 1, from lithium to francium.
  5. Smallest particle that can be obtained in a chemical reaction
Down
  1. Single atom
  2. A description of how a substance reacts with other substances.
  3. A way of writing out what happens in a chemical reaction.
  4. Horizontal row on the Periodic Table
  5. Name of group 7, from fluorine to astatine.

10 Clues: Single atom • Chemical name for common salt. • Last group on the Periodic Table • Horizontal row on the Periodic Table • Name of group 1, from lithium to francium. • Name of group 7, from fluorine to astatine. • Elements on the left hand side of the Periodic Table • A way of writing out what happens in a chemical reaction. • ...

Chemisty 2022-02-24

Chemisty crossword puzzle
Across
  1. Substance present at the start of a chemical reaction
  2. Number in front of a symbol
  3. Substance formed as a result of a chemical reaction
  4. The smallest part of a chemical element
  5. subatomic particle with a positive electrical charge located in the nucleus
Down
  1. Shows how many atoms of an element
  2. uses number and elements to give information
  3. subatomic particle with a negative electrical charge
  4. Combination of 2 or more bonded element
  5. subatomic particle with a neutral electrical change

10 Clues: Number in front of a symbol • Shows how many atoms of an element • Combination of 2 or more bonded element • The smallest part of a chemical element • uses number and elements to give information • subatomic particle with a neutral electrical change • Substance formed as a result of a chemical reaction • subatomic particle with a negative electrical charge • ...

Chem Digest 2025-02-27

Chem Digest crossword puzzle
Across
  1. A state of matter between gas and solid.
  2. The term for a substance that increase the rate of chemical reactions.
  3. Essential gas for respiration.
  4. Element with atomic number of 7.
Down
  1. Process where substance gains oxygen or loses electron.
  2. Amount of product produced in a chemical reaction.
  3. Part of electron with no charge.
  4. Chemical element with the symbol of Na.
  5. SI unit for the amount of substance.
  6. A reaction where heat is absorbed making the surrounding colder.

10 Clues: Essential gas for respiration. • Part of electron with no charge. • Element with atomic number of 7. • SI unit for the amount of substance. • Chemical element with the symbol of Na. • A state of matter between gas and solid. • Amount of product produced in a chemical reaction. • Process where substance gains oxygen or loses electron. • ...

Chemistry Vocabulary Review 2013-10-07

Chemistry Vocabulary Review crossword puzzle
Across
  1. The number of electrons in the outermost energy level.
  2. the number of protons and neutrons found of the periodic table.
  3. Found on the periodic table and represents the number of protons in an atom.
  4. how the atom is organized
  5. substance made of atoms, all have the same number of protons.
  6. The small number found after an element. Tells how many atoms of that element are present in a compound.
  7. the amount of atoms going into a chemical equation must be the same number that comes out of the chemical equation.
  8. The way elements combine chemically
Down
  1. the original material that goes into the chemical equation. Found ont he left side of yield symbol.
  2. A process that involves changes in the structure of atoms.
  3. a subatomic particle that has a neutral charge.
  4. Chemical reaction represented through symbols.
  5. The basic building block of matter. Smallest part of a non-living substance.
  6. A vertical column on the periodic table.
  7. a solid formed out of solution
  8. In a chemical reaction, the number found in front of a molecule. It tells how many molecules of a particular compound are present.
  9. a horizontal row on the periodic table. All atoms in a row share the same number of energy levels.
  10. the numbre of subatomic particles that determines the type of atom. Found in the nucleus of the atom.

18 Clues: how the atom is organized • a solid formed out of solution • The way elements combine chemically • A vertical column on the periodic table. • Chemical reaction represented through symbols. • a subatomic particle that has a neutral charge. • The number of electrons in the outermost energy level. • A process that involves changes in the structure of atoms. • ...

8th Book Test Review MATTER 2024-11-20

8th Book Test Review MATTER crossword puzzle
Across
  1. A substance that exists before a chemical reaction takes place and that changes as a result of the reaction
  2. A limitation on the range of possible solutions to a design problem
  3. A group of two or more atoms that are held together by chemical bonds
  4. An individual particle of an element
Down
  1. A process in which one or more new substances form from other substances
  2. A new substance that forms during a chemical reaction
  3. Matter that has constant chemical composition and characteristic's
  4. The requirements that must be met for an engineering solution to be successful
  5. A unique particle of matter that is a fundamental building block of matter

9 Clues: An individual particle of an element • A new substance that forms during a chemical reaction • Matter that has constant chemical composition and characteristic's • A limitation on the range of possible solutions to a design problem • A group of two or more atoms that are held together by chemical bonds • ...

Chemistry Crossword! 2022-03-30

Chemistry Crossword! crossword puzzle
Across
  1. a number that expresses the relationship between the amounts of products and reactants present at equilibrium in a reversible chemical reaction at a given temperature
  2. the minimum quantity of energy which the reacting species must possess in order to undergo a specified reaction
  3. the equilibrium constant for a solid substance dissolving in an aqueous solution
  4. a chemical or physical reaction that releases heat
  5. describes the interactions between energy sources within the Earth's environment
  6. a relation stating that in a reaction mixture at equilibrium, there is a condition (given by the equilibrium constant, Kc) relating the concentrations of the reactants and products an industrial process for producing ammonia from oxygen and nitrogen
Down
  1. a formula describing the statistical distribution of particles in a system among different energy levels
  2. if the equilibrium of a system is disturbed by a change in one or more of the determining factors (as temperature, pressure, or concentration) the system tends to adjust itself to a new equilibrium by counteracting as far as possible the effect of the change
  3. a measure of the relative amounts of products and reactants present in a reaction at a given time
  4. a chemical reaction accompanied by the absorption of heat
  5. a state of balance between continuing processes
  6. the effect on ​equilibrium that occurs when a common ion (an ion that is already contained in the solution) is added to a solution
  7. a type of thermodynamic system where mass is conserved within the boundaries of the system, but energy is allowed to freely enter or exit the system
  8. an industrial process for producing ammonia from nitrogen and hydrogen, using an iron catalyst at high temperature and pressure
  9. a thermodynamic quantity equivalent to the total heat content of a system. It is equal to the internal energy of the system plus the product of pressure and volume
  10. a thermodynamic quantity equivalent to the capacity of a system to do work

16 Clues: a state of balance between continuing processes • a chemical or physical reaction that releases heat • a chemical reaction accompanied by the absorption of heat • a thermodynamic quantity equivalent to the capacity of a system to do work • the equilibrium constant for a solid substance dissolving in an aqueous solution • ...

Environmental Chemistry 2013-12-09

Environmental Chemistry crossword puzzle
Across
  1. a way of comparing the relative acidity or alkalinity of a substance (2 words)
  2. All living things need a constant supply of this (2 Words)
  3. 14 on the pH scale (2 words)
  4. Number of naturally occurring elements
  5. These increase the surface area for absorption of nutrients (2 Words)
  6. Recommend your daily intake of nutrients (3 Words)
  7. a pesticide that was created in the 1930’s but banned in 1962 (abbreviation)
  8. a mixture of plant compounds extracted from certain lichens
  9. a method in which you release powdered calcium carbonate from aircraft
  10. copper oxide bed regenerable application
Down
  1. Require 18 different elements for proper growth (2 Words)
  2. organisms that eat or disturb the crop that humans do not want
  3. CaSO3 (2 words)
  4. this is how acids taste
  5. a substance that speeds up a chemical reaction without being used up in the reaction
  6. a chemical reaction in which oxygen combine with other elements to form new substances
  7. Substances that aren’t destroyed by cooking or exposure to air
  8. this is how bases taste

18 Clues: CaSO3 (2 words) • this is how acids taste • this is how bases taste • 14 on the pH scale (2 words) • Number of naturally occurring elements • copper oxide bed regenerable application • Recommend your daily intake of nutrients (3 Words) • Require 18 different elements for proper growth (2 Words) • All living things need a constant supply of this (2 Words) • ...

Energy and the Cell 2012-12-15

Energy and the Cell crossword puzzle
Across
  1. ___a chemical reaction requires a net input of energy
  2. transfer of phosphate groups to motor proteins
  3. Coupling use of energy released from exergonic reactions
  4. energy that matter possesses
  5. ATP drives the active tansport of solutes across a membrane
  6. energy of motion
Down
  1. phosphorylation of reactants
  2. estudy of energy transformations
  3. Adenosine Triphosphate
  4. ___ a reaction that releases energy

10 Clues: energy of motion • Adenosine Triphosphate • phosphorylation of reactants • energy that matter possesses • estudy of energy transformations • ___ a reaction that releases energy • transfer of phosphate groups to motor proteins • ___a chemical reaction requires a net input of energy • Coupling use of energy released from exergonic reactions • ...

Biology 2020-09-23

Biology crossword puzzle
Across
  1. Starting materials for a reaction
  2. Energy necessary to turn into product
  3. The ability to do work
  4. Molecules composed of chains of amino acids
  5. Molecules more flexible
  6. Key whose shape fits the lock of the enzyme
Down
  1. Allows the substrate to fit perfectly
  2. Molecule which spreeds up a chemical reaction
  3. Species formed from chemical reactions
  4. Defined as biological catalyst

10 Clues: The ability to do work • Molecules more flexible • Defined as biological catalyst • Starting materials for a reaction • Allows the substrate to fit perfectly • Energy necessary to turn into product • Species formed from chemical reactions • Molecules composed of chains of amino acids • Key whose shape fits the lock of the enzyme • ...

Respiration crossword (Eva) 2023-02-14

Respiration crossword (Eva) crossword puzzle
Across
  1. chemical reaction that does not require oxygen
  2. aerobic respiration takes place here
  3. acid not made from aerobic respiration
  4. chemical reaction that requires oxygen
  5. a single-celled fungus
Down
  1. cells break down this to release energy
  2. ability to do work
  3. gas made from aerobic respiration
  4. made in Anaerobic respiration
  5. keeps the body temperature constant even in a cold environment

10 Clues: ability to do work • a single-celled fungus • made in Anaerobic respiration • gas made from aerobic respiration • aerobic respiration takes place here • acid not made from aerobic respiration • chemical reaction that requires oxygen • cells break down this to release energy • chemical reaction that does not require oxygen • ...

Choice Board crossword 2021-09-29

Choice Board crossword crossword puzzle
Across
  1. the small number in an equation
  2. changes that make a new substance
  3. a reaction that takes in heat
  4. changes that keep the same substance
  5. group of atoms bonded together
Down
  1. smallest unit of matter
  2. the result of a chemical change
  3. a reaction that gives out heat
  4. the letters in the equation
  5. the best teacher in 8th grade

10 Clues: smallest unit of matter • the letters in the equation • a reaction that takes in heat • the best teacher in 8th grade • a reaction that gives out heat • group of atoms bonded together • the small number in an equation • the result of a chemical change • changes that make a new substance • changes that keep the same substance

chem 4.1 2021-10-14

chem 4.1 crossword puzzle
Across
  1. The law of ____ of mass states that in any chemical reaction, the mass of the products is always equal to the mass of the reactants.
  2. A substance that undergoes a chemical reaction is called?
  3. A substance that is formed in a chemical reaction is called?
Down
  1. This lists the chemical formula of each reactant on the left, separated by a + sign if more than one reactant is involved, followed by an arrow.
  2. The numbers that are placed in fornt of chemical formulas are called?
  3. A balanced __ equation reflects the law of conservations of mass.
  4. What identifies the reactants and products of a chemical reaction?

7 Clues: A substance that undergoes a chemical reaction is called? • A substance that is formed in a chemical reaction is called? • A balanced __ equation reflects the law of conservations of mass. • What identifies the reactants and products of a chemical reaction? • The numbers that are placed in fornt of chemical formulas are called? • ...

Rates 2025-04-06

Rates crossword puzzle
Across
  1. Greek letter Δ written before a quantity indicates a change in the quantity
  2. substance that slows down a reaction
  3. describes reactions where products are favored
  4. mathematical expression that shows the relationship between rate of a reaction and the concentration of the reactants
  5. change in concentration of a reactant or product per unit of time, generally expressed as mol/(L·s)
  6. value for Gibbs free energy when the reaction is nonspontaneous
  7. describes reactions where products are NOT favored
  8. type of catalyst important in living organisms
  9. term for the minimum amount of energy that reacting particles must have to lead to a reaction
  10. randomness of all things in the universe
Down
  1. name of the theory that states atoms, ions, and molecules must collide properly in order to react
  2. type of reaction where products have lower energy than reactants
  3. energy that may be converted into work in a system that is at constant temperature & pressure
  4. value for Gibbs free energy when the reaction is spontaneous
  5. type of reaction where reactants have lower energy than products
  6. increases the rate of a chemical reaction without being consumed in the reaction - it is not a reactant or product

16 Clues: substance that slows down a reaction • randomness of all things in the universe • describes reactions where products are favored • type of catalyst important in living organisms • describes reactions where products are NOT favored • value for Gibbs free energy when the reaction is spontaneous • value for Gibbs free energy when the reaction is nonspontaneous • ...

PHOTOSYNTHESIS & RESPIRATION 2017-08-02

PHOTOSYNTHESIS & RESPIRATION crossword puzzle
Across
  1. During photosynthesis, light energy is converted to ..... energy.
  2. Energy is stored in the chemical ....... within the glucose molecule.
  3. Type of cells in the lower leaf epidermis that change shape to form a stoma.
  4. Chemically constructive process that produces plant food in the leaves.
  5. Green pigment in chloroplasts.
  6. Gas used as a reactant in the photosynthesis reaction - ..... dioxide.
  7. Ratio of C:H:O in glucose is 1: ? :1.
  8. Liquid absorbed from the soil & needed as a reactant in the photosynthesis reaction.
  9. Cell organelle in which photosynthesis occurs.
Down
  1. Cellular process that produces energy 24 hours a day in all living cells.
  2. This supplies the energy needed to make plant food - comes from the sun.
  3. Gas produced in the respiration reaction - carbon .......
  4. Number of molecules of carbon dioxide needed to produce 1 molecule of glucose in photosynthesis.
  5. Cell organelle where cellular respiration occurs.
  6. Plant leaves have a large ...... area to maximise absorption of carbon dioxide & light.
  7. Openings on the lower side of leaves allowing for gas exchange.
  8. Plant food produced by the photosynthesis process.
  9. Gas produced by photosynthesis.

18 Clues: Green pigment in chloroplasts. • Gas produced by photosynthesis. • Ratio of C:H:O in glucose is 1: ? :1. • Cell organelle in which photosynthesis occurs. • Cell organelle where cellular respiration occurs. • Plant food produced by the photosynthesis process. • Gas produced in the respiration reaction - carbon ....... • ...

Biology Vocab Crossword 2024-10-23

Biology Vocab Crossword crossword puzzle
Across
  1. A form of respiration that requires oxygen and makes a lot of energy
  2. Process where plants use light energy to change H20 and CO2 into Glucose and O2
  3. Process where body systems interact to maintain internal conditions
  4. Process where plants AND animals use Glucose and O2 to make ATP, H2O, and CO2
  5. Organelles where Photosynthesis occurs
  6. Molecules that come out of a reaction (end)
  7. Tissue in a plant that transports water from the roots to the rest of the plant
  8. A small opening in the leaf that allows gas exchange to happen
Down
  1. Tissue in a plant that transports nutrients from the leaves to the rest of the plant
  2. A protein that catalyzes (speeds up) a chemical reaction by lowering the activation energy
  3. Organelle where Respiration occurs
  4. Female parts of a plant
  5. A molecule that the enzymes work on
  6. A specialized cell that controls the opening and closing of the stomata
  7. A form of respiration that does not have oxygen available and makes less energy
  8. Male parts of a plant
  9. Molecules that go into a reaction (beginning)
  10. A form of chemical energy

18 Clues: Male parts of a plant • Female parts of a plant • A form of chemical energy • Organelle where Respiration occurs • A molecule that the enzymes work on • Organelles where Photosynthesis occurs • Molecules that come out of a reaction (end) • Molecules that go into a reaction (beginning) • A small opening in the leaf that allows gas exchange to happen • ...

Enzyme Crossword 2021-10-20

Enzyme Crossword crossword puzzle
Across
  1. needed for reaction
  2. location of breaking or bonding substrates
  3. enzymes require optimal pH and temperature
  4. substrate with enzyme
  5. type of protein
  6. after reaction
  7. the best ph or temperature
Down
  1. deteriorating shape
  2. 98.69 degrees
  3. speeds up chemical reactions
  4. enzymes in stomach
  5. shape of enzyme dictates...
  6. bring substrates together
  7. enzyme

14 Clues: enzyme • 98.69 degrees • after reaction • type of protein • enzymes in stomach • deteriorating shape • needed for reaction • substrate with enzyme • bring substrates together • the best ph or temperature • shape of enzyme dictates... • speeds up chemical reactions • location of breaking or bonding substrates • enzymes require optimal pH and temperature

science home work guide 2023-02-16

science home work guide crossword puzzle
Across
  1. is a form of energy from random vibrating atoms.
  2. energy that is stored
  3. nonrenewable resource
  4. the ability to cause change
  5. When a chemical reaction gives off energy
Down
  1. occurs when heat rises upward
  2. occurs when heat transfers due to contact
  3. renewable resource
  4. travels at around 330 m/s in air
  5. When a chemical reaction takes in energy.

10 Clues: renewable resource • energy that is stored • nonrenewable resource • the ability to cause change • occurs when heat rises upward • travels at around 330 m/s in air • occurs when heat transfers due to contact • When a chemical reaction takes in energy. • When a chemical reaction gives off energy • is a form of energy from random vibrating atoms.

SOL Vocabulary 2021-04-27

SOL Vocabulary crossword puzzle
Across
  1. part of enzyme where substrate fits in
  2. A pure substance made up of the same atom
  3. Water sticks to water
  4. catalyst that speeds up reactions
Down
  1. substances at start of chemical reaction
  2. Chart that organizes elements
  3. a large molecule creating compounds
  4. substance enzyme attaches to
  5. Water sticks to another substance
  6. substances at end of chemical reaction

10 Clues: Water sticks to water • substance enzyme attaches to • Chart that organizes elements • Water sticks to another substance • catalyst that speeds up reactions • a large molecule creating compounds • part of enzyme where substrate fits in • substances at end of chemical reaction • substances at start of chemical reaction • A pure substance made up of the same atom

Biology vocab 2 2021-10-22

Biology vocab 2 crossword puzzle
Across
  1. A chemical bond linking phosphate groups to other molecules
  2. Product of fermentation in cells.
  3. Process that requires oxygen
  4. Process that produces energy by breaking down glucose with oxygen
Down
  1. Reaction where glucose is broken into two Peruvian molecules
  2. Breakdown of carbohydrates
  3. Process that doesn’t require oxygen
  4. Inner mitochondrial membrane that Carrie out the ETC reaction
  5. Reactions where the membrane transfers electrons from one chemical to another across the thylakoid.
  6. Reaction where Peruvian acid is broken down into carbon dioxide and water creating ATP

10 Clues: Breakdown of carbohydrates • Process that requires oxygen • Product of fermentation in cells. • Process that doesn’t require oxygen • A chemical bond linking phosphate groups to other molecules • Reaction where glucose is broken into two Peruvian molecules • Inner mitochondrial membrane that Carrie out the ETC reaction • ...

Chemical Reactions 2025-09-06

Chemical Reactions crossword puzzle
Across
  1. The smallest building blocks of matter.
  2. The starting ingredients in a chemical reaction.
  3. A change in size, shape, or state but no new substance is made.
  4. Two or more atoms joined together.
  5. A person who designs and builds things using chemistry.
  6. The substances made in a chemical reaction.
Down
  1. A change that makes a new substance.
  2. A person who studies and creates new materials.
  3. A substance that speeds up a reaction.
  4. The special features of a substance, like color or hardness.

10 Clues: Two or more atoms joined together. • A change that makes a new substance. • A substance that speeds up a reaction. • The smallest building blocks of matter. • The substances made in a chemical reaction. • A person who studies and creates new materials. • The starting ingredients in a chemical reaction. • A person who designs and builds things using chemistry. • ...

PHOTOSYNTHESIS 2013-04-28

PHOTOSYNTHESIS crossword puzzle
Across
  1. stage of photsynthesis that only occurs in daylight
  2. where does the light-independent reaction take place?
  3. who worked out the details of the light-independent reaction?
  4. name the process in which ADP is converted to ATP by light
  5. what type of reaction is photosynthesis?
  6. ATP and reduced NADP are used to reduce the activated glycerate 3 phosphate to...
  7. where is the chemical energy needed for photosynthesis stored
  8. approximatley how many kilojoules of energy does each molecule of hydrolysed ATP produce?
  9. what type of reactions release small amounts of energy to synthesise ATP
Down
  1. organisms that make their own food
  2. enzyme which catalyses hydrolysis in photosynthesis
  3. name the 5-carbon compound which CO2 combines with
  4. As well as DNA, what does the stroma contain which allows proteins needed for the light -independent reaction to be manufactured quickly?
  5. the main products of the light dependent reaction are ATP and ...
  6. name the most abundant pigment found within chloroplasts
  7. where does the light dependent reaction take place?
  8. by which process does Carbon Dioxide enter the stomata of the leaf?
  9. electron carriers are ... when they gain electrons

18 Clues: organisms that make their own food • what type of reaction is photosynthesis? • name the 5-carbon compound which CO2 combines with • electron carriers are ... when they gain electrons • enzyme which catalyses hydrolysis in photosynthesis • stage of photsynthesis that only occurs in daylight • where does the light dependent reaction take place? • ...

Photosynthesis 2022-04-01

Photosynthesis crossword puzzle
Across
  1. small openings in the undersides of leaves
  2. the process by which a cell captures energy in sunlight and uses it to make food
  3. an organism that cannot make its own food
  4. the main photosynthesis pigment in chloroplasts
  5. substances that start a chemical reaction
Down
  1. chemical compounds that absorb light
  2. an organism that makes its own food
  3. substances that are produced in a chemical reaction
  4. makes, creates, produces; the arrow in chemical equation

9 Clues: an organism that makes its own food • chemical compounds that absorb light • an organism that cannot make its own food • substances that start a chemical reaction • small openings in the undersides of leaves • the main photosynthesis pigment in chloroplasts • substances that are produced in a chemical reaction • makes, creates, produces; the arrow in chemical equation • ...

Enzymes Practice 2022-11-28

Enzymes Practice crossword puzzle
Across
  1. a substance that lowers the activation energy of reactants
  2. the chemicals present at the end of a chemical reaction
  3. a protein catalyst
  4. the energy required to start a chemical reaction
Down
  1. the reactant to which an enzyme binds
  2. the chemicals present at the beginning of a chemical reaction
  3. the specific part of an enzyme where substrates bind
  4. a molecule that prevents the substrate from binding

8 Clues: a protein catalyst • the reactant to which an enzyme binds • the energy required to start a chemical reaction • a molecule that prevents the substrate from binding • the specific part of an enzyme where substrates bind • the chemicals present at the end of a chemical reaction • a substance that lowers the activation energy of reactants • ...

Chemical Challange 2024-08-01

Chemical Challange crossword puzzle
Across
  1. A chemical reaction where heat is absorbed
  2. The arrangement of electrons in an atom
  3. The energy required to break bonds in reactants
  4. A measure of the concentration of hydrogen ions in a solution
Down
  1. The process of breaking down a compound into its elements
  2. A negatively charged ion
  3. A substance that increases the rate of a chemical reaction without being consumed
  4. A chemical reaction where heat is released

8 Clues: A negatively charged ion • The arrangement of electrons in an atom • A chemical reaction where heat is absorbed • A chemical reaction where heat is released • The energy required to break bonds in reactants • The process of breaking down a compound into its elements • A measure of the concentration of hydrogen ions in a solution • ...

Science 2022-11-09

Science crossword puzzle
Across
  1. - a mixture of two or more elements, at least one of which is a metal, that has the characteristic properties of a metal
  2. equation - a representation of a chemical reaction in which the reactants and products are expressed as formulas
  3. dot diagram - a diagram of an atom, ion or molecule in which each dot represents a valence electron
  4. formula - notation that shows what elements a compound contains and the ratio of the atoms or ions of these elements in the compound
  5. - a substance that undergoes change in a chemical reaction
  6. energy - the energy stored in chemical bonds
  7. - an atom or group of atoms that has a positive or negative charge
Down
  1. - new substances formed as a result of a chemical reaction
  2. - a neutral group of atoms that are joined together by one or more covalent bonds
  3. bond - the force that holds cations and anions together
  4. bond - the force that holds atoms or ions together as a unit
  5. bond - a chemical bond in which two atoms share a pair of valence electrons
  6. bond - the attraction between a metal cation and the shared electrons that surround it

13 Clues: energy - the energy stored in chemical bonds • bond - the force that holds cations and anions together • - new substances formed as a result of a chemical reaction • - a substance that undergoes change in a chemical reaction • bond - the force that holds atoms or ions together as a unit • - an atom or group of atoms that has a positive or negative charge • ...

Chapter 6-7 vocab 2024-04-03

Chapter 6-7 vocab crossword puzzle
Across
  1. a mixture of two or more elements, at least one of which is a metal, that has the characteristic properties of a metal
  2. equation a representation of a chemical reaction in which the reactants and products are expressed as formulas
  3. dot diagram a diagram of an atom, ion or molecule in which each dot represents a valence electron
  4. formula notation that shows what elements a compound contains and the ratio of the atoms or ions of these elements in the compound
  5. a substance that undergoes change in a chemical reaction
  6. energy the energy stored in chemical bonds
  7. an atom or group of atoms that has a positive or negative charge
Down
  1. new substances formed as a result of a chemical reaction
  2. a neutral group of atoms that are joined together by one or more covalent bonds
  3. bond the force that holds cations and anions together
  4. bond the force that holds atoms or ions together as a unit
  5. bond a chemical bond in which two atoms share a pair of valence electrons
  6. bond the attraction between a metal cation and the shared electrons that surround it

13 Clues: energy the energy stored in chemical bonds • bond the force that holds cations and anions together • new substances formed as a result of a chemical reaction • a substance that undergoes change in a chemical reaction • bond the force that holds atoms or ions together as a unit • an atom or group of atoms that has a positive or negative charge • ...

Vocab 6 & 7 2023-03-28

Vocab 6 & 7 crossword puzzle
Across
  1. - a mixture of two or more elements, at least one of which is a metal, that has the characteristic properties of a metal
  2. equation - a representation of a chemical reaction in which the reactants and products are expressed as formulas
  3. dot diagram - a diagram of an atom, ion or molecule in which each dot represents a valence electron
  4. formula - notation that shows what elements a compound contains and the ratio of the atoms or ions of these elements in the compound
  5. - a substance that undergoes change in a chemical reaction
  6. energy - the energy stored in chemical bonds
  7. - an atom or group of atoms that has a positive or negative charge
Down
  1. - new substances formed as a result of a chemical reaction
  2. - a neutral group of atoms that are joined together by one or more covalent bonds
  3. bond - the force that holds cations and anions together
  4. bond - the force that holds atoms or ions together as a unit
  5. bond - a chemical bond in which two atoms share a pair of valence electrons
  6. bond - the attraction between a metal cation and the shared electrons that surround it

13 Clues: energy - the energy stored in chemical bonds • bond - the force that holds cations and anions together • - new substances formed as a result of a chemical reaction • - a substance that undergoes change in a chemical reaction • bond - the force that holds atoms or ions together as a unit • - an atom or group of atoms that has a positive or negative charge • ...

Chapter 6 & 7 2023-03-28

Chapter 6 & 7 crossword puzzle
Across
  1. - a mixture of two or more elements, at least one of which is a metal, that has the characteristic properties of a metal
  2. equation - a representation of a chemical reaction in which the reactants and products are expressed as formulas
  3. dot diagram - a diagram of an atom, ion or molecule in which each dot represents a valence electron
  4. formula - notation that shows what elements a compound contains and the ratio of the atoms or ions of these elements in the compound
  5. - a substance that undergoes change in a chemical reaction
  6. energy - the energy stored in chemical bonds
  7. - an atom or group of atoms that has a positive or negative charge
Down
  1. - new substances formed as a result of a chemical reaction
  2. - a neutral group of atoms that are joined together by one or more covalent bonds
  3. bond - the force that holds cations and anions together
  4. bond - the force that holds atoms or ions together as a unit
  5. bond - a chemical bond in which two atoms share a pair of valence electrons
  6. bond - the attraction between a metal cation and the shared electrons that surround it

13 Clues: energy - the energy stored in chemical bonds • bond - the force that holds cations and anions together • - new substances formed as a result of a chemical reaction • - a substance that undergoes change in a chemical reaction • bond - the force that holds atoms or ions together as a unit • - an atom or group of atoms that has a positive or negative charge • ...

2 - Chemical Equations 2023-06-13

2 - Chemical Equations crossword puzzle
Across
  1. insoluble substance that is formed is.
  2. The process of digestion and Respiration are ____ changes.
  3. Heat is liberated in ______ reactions.
  4. Heating of water is a _______ change.
  5. unbalanced equation is known as
  6. All the chemical equations must be balanced to satisfy ___ law
  7. Substances which undergo chemical change
Down
  1. New substances is formed in chemical reaction.
  2. Calcium oxide is also known as.
  3. A temporary change.
  4. A permanent change.
  5. Heat is absorbed in ______ reactions.
  6. A gas that put off burning match stick with pop sound.
  7. A Chemical equation is the ____representation of a chemical change.

14 Clues: A temporary change. • A permanent change. • Calcium oxide is also known as. • unbalanced equation is known as • Heat is absorbed in ______ reactions. • Heating of water is a _______ change. • insoluble substance that is formed is. • Heat is liberated in ______ reactions. • Substances which undergo chemical change • New substances is formed in chemical reaction. • ...

b17 2026-01-03

b17 crossword puzzle
Across
  1. Bone connection
  2. Recovery process
  3. Energy release
  4. Automatic response
  5. Food breakdown
  6. Waste removal
  7. Movement tissue
  8. Signal pathway
  9. Bone connector
Down
  1. Blood movement
  2. Reaction to stimulus
  3. Nutrient uptake
  4. Disease defense
  5. Environmental signal
  6. Body framework
  7. Flexible tissue
  8. Abnormal condition
  9. Chemical messenger
  10. Liquid blood part
  11. Muscle connector

20 Clues: Waste removal • Blood movement • Energy release • Body framework • Food breakdown • Signal pathway • Bone connector • Bone connection • Nutrient uptake • Disease defense • Flexible tissue • Movement tissue • Recovery process • Muscle connector • Liquid blood part • Automatic response • Abnormal condition • Chemical messenger • Reaction to stimulus • Environmental signal

Fire Wardens 2012-11-26

Fire Wardens crossword puzzle
Across
  1. Class C Material
  2. Can Freeze on a CO2 Extinguisher
  3. Removal of Oxygen
  4. Lightening Strike Symbol (safe to use on)
  5. Carbon Dioxide Colour
  6. Spread of Heat
  7. Class B Material
  8. Spread of Fire Through Solids
  9. Indicates Extinguisher Pressure
  10. Wet Chemical Colour
  11. Service interval for a Fire Extinuisher
  12. Dry Powder Colour
Down
  1. Wet Chemical Reaction With Hot Oil
  2. Spread of Fire Through Air
  3. Foam Colour
  4. Identifies Extinguisher as ready to use
  5. Removal of Fuel
  6. Class A Material
  7. Water Colour
  8. Removal of Heat
  9. Indentifies service history

21 Clues: Foam Colour • Water Colour • Spread of Heat • Removal of Fuel • Removal of Heat • Class C Material • Class A Material • Class B Material • Removal of Oxygen • Dry Powder Colour • Wet Chemical Colour • Carbon Dioxide Colour • Spread of Fire Through Air • Indentifies service history • Spread of Fire Through Solids • Indicates Extinguisher Pressure • Can Freeze on a CO2 Extinguisher • ...

Chapters 6 & 7 vocabulary words 2023-03-29

Chapters 6 & 7 vocabulary words crossword puzzle
Across
  1. - a mixture of two or more elements, at least one of which is a metal, that has the characteristic properties of a metal
  2. equation - a representation of a chemical reaction in which the reactants and products are expressed as formulas
  3. dot diagram - a diagram of an atom, ion or molecule in which each dot represents a valence electron
  4. formula - notation that shows what elements a compound contains and the ratio of the atoms or ions of these elements in the compound
  5. - a substance that undergoes change in a chemical reaction
  6. energy - the energy stored in chemical bonds
  7. - an atom or group of atoms that has a positive or negative charge
Down
  1. - new substances formed as a result of a chemical reaction
  2. - a neutral group of atoms that are joined together by one or more covalent bonds
  3. bond - the force that holds cations and anions together
  4. bond - the force that holds atoms or ions together as a unit
  5. bond - a chemical bond in which two atoms share a pair of valence electrons
  6. bond - the attraction between a metal cation and the shared electrons that surround it

13 Clues: energy - the energy stored in chemical bonds • bond - the force that holds cations and anions together • - new substances formed as a result of a chemical reaction • - a substance that undergoes change in a chemical reaction • bond - the force that holds atoms or ions together as a unit • - an atom or group of atoms that has a positive or negative charge • ...

Vocabulary 2022-11-10

Vocabulary crossword puzzle
Across
  1. - a mixture of two or more elements, at least one of which is a metal, that has the characteristic properties of a metal
  2. equation - a representation of a chemical reaction in which the reactants and products are expressed as formulas
  3. dot diagram - a diagram of an atom, ion or molecule in which each dot represents a valence electron
  4. formula - notation that shows what elements a compound contains and the ratio of the atoms or ions of these elements in the compound
  5. - a substance that undergoes change in a chemical reaction
  6. energy - the energy stored in chemical bonds
  7. - an atom or group of atoms that has a positive or negative charge
Down
  1. - new substances formed as a result of a chemical reaction
  2. - a neutral group of atoms that are joined together by one or more covalent bonds
  3. bond - the force that holds cations and anions together
  4. bond - the force that holds atoms or ions together as a unit
  5. bond - a chemical bond in which two atoms share a pair of valence electrons
  6. bond - the attraction between a metal cation and the shared electrons that surround it

13 Clues: energy - the energy stored in chemical bonds • bond - the force that holds cations and anions together • - new substances formed as a result of a chemical reaction • - a substance that undergoes change in a chemical reaction • bond - the force that holds atoms or ions together as a unit • - an atom or group of atoms that has a positive or negative charge • ...

Chp 6 2022-11-09

Chp 6 crossword puzzle
Across
  1. a mixture of two or more elements, at least one of which is a metal, that has the characteristic properties of a metal
  2. equation a representation of a chemical reaction in which the reactants and products are expressed as formulas
  3. dot diagram a diagram of an atom, ion or molecule in which each dot represents a valence electron
  4. formula notation that shows what elements a compound contains and the ratio of the atoms or ions of these elements in the compound
  5. a substance that undergoes change in a chemical reaction
  6. energy the energy stored in chemical bonds
  7. an atom or group of atoms that has a positive or negative charge
Down
  1. new substances formed as a result of a chemical reaction
  2. a neutral group of atoms that are joined together by one or more covalent bonds
  3. bond the force that holds cations and anions together
  4. bond the force that holds atoms or ions together as a unit
  5. bond a chemical bond in which two atoms share a pair of valence electrons
  6. bond the attraction between a metal cation and the shared electrons that surround it

13 Clues: energy the energy stored in chemical bonds • bond the force that holds cations and anions together • new substances formed as a result of a chemical reaction • a substance that undergoes change in a chemical reaction • bond the force that holds atoms or ions together as a unit • an atom or group of atoms that has a positive or negative charge • ...

unit 3 test 2022-03-29

unit 3 test crossword puzzle
Across
  1. the bindig of a regulatory molecules to a protein at one site that affects the function of the protein at a different site
  2. organic molecules serving as a cofactor
  3. an energy-coupling mechanism that uses energy stored in the form of a hydrogen ion gradient across a membrane to drive cellular work
  4. a catabolic process that makes a limited amounf of ATP
  5. a metabolic pathway that consumes energy to synthesuze a complex molecule from simpler molecules
  6. a metabolic pathway that releases energy by breaking down complex molecules to simpler molecules
  7. a series of reactions that splits glucose into pyruvate
Down
  1. a nonspontaneous chemical reaction in which free energy is absorbed from the surroundings
  2. a spontaneous chemical reaction in which there is a net release of free energy
  3. the entry compund for the citric acid cycle in cellular respiration, formed from a two-carbon fragment of pyruvate attached to a coenzyme
  4. a process by which a chemical agent called a catalyst selectively increases the rate of reaction without being consumed by the reaction
  5. reduced form of nicotinamide adenine dinucleotide that stores electrons
  6. an adenine-containing nucleotide triphosphate that releases free energy when its phosphate bonds are hydrolyzed.
  7. a catabolic pathway for organic molecules using oxygen as the final electron acceptor & producing ATP

14 Clues: organic molecules serving as a cofactor • a catabolic process that makes a limited amounf of ATP • a series of reactions that splits glucose into pyruvate • reduced form of nicotinamide adenine dinucleotide that stores electrons • a spontaneous chemical reaction in which there is a net release of free energy • ...

Crossword 2021-08-04

Crossword crossword puzzle
Across
  1. Metalloid used in computer chips
  2. The lightest element known
  3. The smallest alkene
  4. A gas with 8 protons and 8 neutrons
  5. Form of Oxygen found in upper atmosphere
  6. Factor affecting rate of reactions
  7. Alkaloid naturally found in Coffee and cocoa
Down
  1. Substance that speeds a chemical reaction without being consumed
  2. Diflurodichloromethane is commonly known as
  3. Group 17 elements of periodic table are called
  4. A process is spontaneous if the free energy of the process is
  5. Solid that forms from a solution during chemical reaction

12 Clues: The smallest alkene • The lightest element known • Metalloid used in computer chips • Factor affecting rate of reactions • A gas with 8 protons and 8 neutrons • Form of Oxygen found in upper atmosphere • Diflurodichloromethane is commonly known as • Alkaloid naturally found in Coffee and cocoa • Group 17 elements of periodic table are called • ...

Periodic table 2021-12-08

Periodic table crossword puzzle
Across
  1. ​what electrons are located in
  2. how many shells an atom has
  3. table that has all the elements on it
  4. how an element behaves during a chemical reaction
  5. metals the elements in the middle of the periodic table
  6. electrons on the outermost shell
  7. depends on how many protons there are
Down
  1. properties that become evident after a chemical reaction
  2. columns on the periodic table
  3. how an atom behaves, feels like, etc
  4. how an element feels, tastes, etc
  5. rows on the periodic table

12 Clues: rows on the periodic table • how many shells an atom has • columns on the periodic table • ​what electrons are located in • electrons on the outermost shell • how an element feels, tastes, etc • how an atom behaves, feels like, etc • table that has all the elements on it • depends on how many protons there are • how an element behaves during a chemical reaction • ...

enzymes 2026-03-03

enzymes crossword puzzle
Across
  1. substance formed as a result of a chemical reaction
  2. sum of all the chemical reactions occuring in that cell.
  3. describes a flexible active site that changes shape to the substrate as they bond together
  4. substance that is consumed to form new substances
  5. inhibits the activity of enzymes
  6. absorbs free energy from surroundings
  7. describes active site having a set shape
  8. breaking down molecules
Down
  1. energy required to start any reaction
  2. a net release of free energy
  3. forming larger molecules
  4. organic cofactors

12 Clues: organic cofactors • breaking down molecules • forming larger molecules • a net release of free energy • inhibits the activity of enzymes • energy required to start any reaction • absorbs free energy from surroundings • describes active site having a set shape • substance that is consumed to form new substances • substance formed as a result of a chemical reaction • ...

Chemicals 2024-02-01

Chemicals crossword puzzle
Across
  1. The end result of a reaction
  2. What goes through the chemical change.
  3. A number on the right of a symbol that tells the amount of atoms
  4. A group of symbols that make an equation
Down
  1. Two substances going through a chemical change
  2. A pure substance
  3. When no matter was created or destroyed
  4. Change A new substance is formed
  5. A one or two letter notation of an element.
  6. The thing that goes from the reactants the products

10 Clues: A pure substance • The end result of a reaction • Change A new substance is formed • What goes through the chemical change. • When no matter was created or destroyed • A group of symbols that make an equation • A one or two letter notation of an element. • Two substances going through a chemical change • The thing that goes from the reactants the products • ...

chemical bonds 2022-01-21

chemical bonds crossword puzzle
Across
  1. the # and type of atom in the molecule
  2. reaction happens when chemical bonds give off heat
  3. each shell around the nucleus contains a specific number of ______.
  4. Transfer valence electrons
Down
  1. Share valence electrons
  2. a new substance is formed from a chemical reaction.
  3. electrons in the outer shell are called?
  4. groups of atoms held together by chemical bonds.
  5. transfer or share electrons to for a full outer shell
  6. are very small and made up of small molecules.

10 Clues: Share valence electrons • Transfer valence electrons • the # and type of atom in the molecule • electrons in the outer shell are called? • are very small and made up of small molecules. • groups of atoms held together by chemical bonds. • reaction happens when chemical bonds give off heat • a new substance is formed from a chemical reaction. • ...

Vocab 2022-11-09

Vocab crossword puzzle
Across
  1. - a mixture of two or more elements, at least one of which is a metal, that has the characteristic properties of a metal
  2. equation - a representation of a chemical reaction in which the reactants and products are expressed as formulas
  3. dot diagram - a diagram of an atom, ion or molecule in which each dot represents a valence electron
  4. formula - notation that shows what elements a compound contains and the ratio of the atoms or ions of these elements in the compound
  5. - a substance that undergoes change in a chemical reaction
  6. energy - the energy stored in chemical bond
  7. - an atom or group of atoms that has a positive or negative charge
Down
  1. - new substances formed as a result of a chemical reaction
  2. - a neutral group of atoms that are joined together by one or more covalent bonds
  3. bond - the force that holds cations and anions together
  4. bond - the force that holds atoms or ions together as a unit
  5. bond - a chemical bond in which two atoms share a pair of valence electrons
  6. bond - the attraction between a metal cation and the shared electrons that surround it

13 Clues: energy - the energy stored in chemical bond • bond - the force that holds cations and anions together • - new substances formed as a result of a chemical reaction • - a substance that undergoes change in a chemical reaction • bond - the force that holds atoms or ions together as a unit • - an atom or group of atoms that has a positive or negative charge • ...

Ch 6&7 2024-04-03

Ch 6&7 crossword puzzle
Across
  1. a mixture of two or more elements, at least one of which is a metal, that has the characteristic properties of a metal
  2. equation a representation of a chemical reaction in which the reactants and products are expressed as formulas
  3. dot diagram a diagram of an atom, ion or molecule in which each dot represents a valence electron
  4. formula notation that shows what elements a compound contains and the ratio of the atoms or ions of these elements in the compound
  5. a substance that undergoes change in a chemical reaction
  6. energy the energy stored in chemical bonds
  7. an atom or group of atoms that has a positive or negative charge
Down
  1. new substances formed as a result of a chemical reaction
  2. a neutral group of atoms that are joined together by one or more covalent bonds
  3. bond the force that holds cations and anions together
  4. bond the force that holds atoms or ions together as a unit
  5. bond a chemical bond in which two atoms share a pair of valence electrons
  6. bond the attraction between a metal cation and the shared electrons that surround it

13 Clues: energy the energy stored in chemical bonds • new substances formed as a result of a chemical reaction • bond the force that holds cations and anions together • a substance that undergoes change in a chemical reaction • bond the force that holds atoms or ions together as a unit • an atom or group of atoms that has a positive or negative charge • ...

Endothermic & Exothermic Reactions 3 2025-10-22

Endothermic & Exothermic Reactions 3 crossword puzzle
Across
  1. Starting substance in a reaction
  2. Reaction that occurs naturally without external energy
  3. Reaction that can go in both directions
  4. Reaction that cannot go backward
  5. Substance formed after a chemical reaction
Down
  1. Gas turning to liquid, releasing heat
  2. State where forward and reverse reactions are equal
  3. Solid changing directly to gas
  4. Liquid turning to gas, absorbing heat
  5. Measure of disorder or randomness

10 Clues: Solid changing directly to gas • Starting substance in a reaction • Reaction that cannot go backward • Measure of disorder or randomness • Gas turning to liquid, releasing heat • Liquid turning to gas, absorbing heat • Reaction that can go in both directions • Substance formed after a chemical reaction • State where forward and reverse reactions are equal • ...

Keystone vocab 2025-10-15

Keystone vocab crossword puzzle
Across
  1. a large geographic area with distinct plants and animals
  2. enables a chemical reaction at a faster rate
  3. single celled organism without a membrane bound nucleus
  4. the attraction of unlike molecules
  5. breaks down dead plants and animals
  6. the nonliving parts of an ecosystem
Down
  1. a system composed of organisms and nonliving components
  2. an organism composed of one or more cells with a membrane bound nucleus
  3. a macromolecule, fast energy
  4. a chemical reaction that breaks down polymers with water
  5. smallest unit of life
  6. makes up everything

12 Clues: makes up everything • smallest unit of life • a macromolecule, fast energy • the attraction of unlike molecules • breaks down dead plants and animals • the nonliving parts of an ecosystem • enables a chemical reaction at a faster rate • a system composed of organisms and nonliving components • single celled organism without a membrane bound nucleus • ...

Electrochemistry crossword 2012-06-17

Electrochemistry crossword crossword puzzle
Across
  1. a method in which an active metal, such as magnesium, is connected to steel to protect it from corrosion.
  2. the two parts of an oxidation-reduction reaction, one representing oxidation, the other reduction
  3. a decrease in oxidation state(a gain of electrons)
  4. a disk in a tube connecting two different solutions in a galvanic cell that allows ion flow ithout extensive mixing of the solutions
Down
  1. a device in which chemical nergy from a spontaneous redox reaction is changed to electrical energy that can be used to do work
  2. a U-tube containing an electrolyte that connects the two compartments of a galvanic cell, allowing ion flow without extensive mixing of the different solutions
  3. a reactant that accepts electrons from another reactant (electron acceptor)
  4. the electrode in a galvanic cell at which reduction occurs
  5. a reactant that donates electrons to another substance to reduce the oxidation state of one of its atoms (electron donor)
  6. the study of the interchange of chemical and electrical energy
  7. an increase in oxidation state(a loss of electron)
  8. a process that involves forcing a current through a cell to cause a nonspontaneous chemical reaction to occur
  9. the electrode in a galvanic cell at which oxidation occurs

13 Clues: an increase in oxidation state(a loss of electron) • a decrease in oxidation state(a gain of electrons) • the electrode in a galvanic cell at which reduction occurs • the electrode in a galvanic cell at which oxidation occurs • the study of the interchange of chemical and electrical energy • ...

Chemical Reactions, Mixtures & Solutions 2025-08-12

Chemical Reactions, Mixtures & Solutions crossword puzzle
Across
  1. Reaction A process where substances combine or break apart to form new substances with different properties.
  2. The substance that is dissolved in a solution, like salt in saltwater.
  3. A substance that speeds up a chemical reaction without being used up in the process.
  4. A mixture where small particles are spread throughout a liquid or gas but are not dissolved, like sand in water.
  5. To make a solution less concentrated by adding more solvent, like adding water to juice.
  6. The amount of solute present in a certain amount of solvent or solution.
Down
  1. The substance in a solution that dissolves the other substance, usually a liquid like water.
  2. A solution that cannot dissolve any more solute at a given temperature.
  3. A mixture where very small particles are spread evenly throughout another substance, like milk.
  4. A type of mixture where one substance is completely dissolved in another, like sugar in water.
  5. The process where a solute breaks down and spreads evenly throughout a solvent, forming a solution.
  6. A solution that contains more solute than it can normally hold at a given temperature.
  7. Rate The speed at which a chemical reaction occurs.

13 Clues: Rate The speed at which a chemical reaction occurs. • The substance that is dissolved in a solution, like salt in saltwater. • A solution that cannot dissolve any more solute at a given temperature. • The amount of solute present in a certain amount of solvent or solution. • A substance that speeds up a chemical reaction without being used up in the process. • ...

Chemical Reactions 2025-04-20

Chemical Reactions crossword puzzle
Across
  1. An object, diagram, or computer program that helps us understand something by making it simpler or easier to see
  2. Something that can be observed about a substance, such as its color, smell, or boiling point
  3. A starting substance that is part of a chemical reaction.
  4. A process in which atoms rearrange to form new substances
  5. A group of two of more different atoms held together by a chemical bond.
  6. Something that is made of all the same atoms or groups of atoms
Down
  1. A group of two of more atoms held together by a chemical bond.
  2. To change the order or position of something.
  3. An ending substance that is made during a chemical reaction.
  4. The tiny pieces that all matter — all of the stuff in the world — is made of

10 Clues: To change the order or position of something. • A starting substance that is part of a chemical reaction. • A process in which atoms rearrange to form new substances • An ending substance that is made during a chemical reaction. • A group of two of more atoms held together by a chemical bond. • Something that is made of all the same atoms or groups of atoms • ...

5.4 A world of reactions 2015-11-08

5.4 A world of reactions crossword puzzle
Across
  1. Compounds containing only carbon and hydrogen.
  2. Chemical reactions in which a fuel reacts with oxygen and heat is released.
  3. Chemical reactions involving the transfer of electrons from the atoms of a more reactive metal to the ions of a less reactive metal.
  4. Chemical reactions that wear away a metal.
  5. Chemical reaction involving the loss of electrons by a substance.
Down
  1. Chemical reactions in which two substances, usually elements, combine to form a compound.
  2. Chemical reactions in which one single compound breaks down into two or more simpler chemicals.
  3. Chemical reaction involving the gain of electrons by a substance.
  4. Chemical reactions involving oxidation and reduction.

9 Clues: Chemical reactions that wear away a metal. • Compounds containing only carbon and hydrogen. • Chemical reactions involving oxidation and reduction. • Chemical reaction involving the gain of electrons by a substance. • Chemical reaction involving the loss of electrons by a substance. • Chemical reactions in which a fuel reacts with oxygen and heat is released. • ...