Chemistry

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Across
  1. 1. All elements are made up of particle s called ________
  2. 3. ________ are dull, brittle, non-acidic, found in all 3 states at room temperature, and are often insulators.
  3. 6. ________ are found on the left hand side of the periodic table. (e.g. Ca, Li)
  4. 8. The four products of incomplete combustion are CO (Carbon Monoxide), CO2 (Carbon Dioxide), ________, and C (Carbon / Soot).
  5. 10. ________ is a chemical reaction that involves both an element and a compound, which reacts so that the element displaces another element in a compound.
  6. 13. This compound dissociates in water (aqueous solution to create hydrogen (H+) ions. Properties of this compound include: reacts with metals and carbonates, conducts electricity, turns blue litmus paper red, neutralizes bases, and is sour.
  7. 16. This compound separates into ions when it dissolves in water creating a solution that conducts electricity.
  8. 17. This material safety system was created to protect people from dangers within the home.
  9. 18. Inside the nucleus neutrons and ________ can be found.
  10. 19. ________ bonds occur when metal transfers at least one of it’s electrons to a non-metal to gain a total of 8 valence electrons, thus making it stable. A strong attraction is formed between positive and negative ions in this compound.
  11. 20. An anion is an ion that has a negative charge, and a ________ is an ion with a positive charge. This type of ion is always a metal.
  12. 21. This physical property relies on the sense of smell. Words used to describe include odourless, spicy, sharp, burnt, strong or sweet.
  13. 22. These substances, in even the smallest of doses, can poison, cause injury, or even death if consumed, absorbed through the skin, or inhaled.
  14. 23. In the innermost (first) valence shelf there are always ________ electrons.
  15. 25. ________ is the fast reaction between a substance with oxygen creating oxides, and is also known as burning.
Down
  1. 2. Incomplete Combustion, which is when not all of the carbon from the hydrocarbon is changed into carbon dioxide, happens when ________ is limited.
  2. 4. ________ are shiny, silvery metals, that are highly reactive, and form white solids as compounds.
  3. 5. ________ A chemical that is present at the beginning of the chemical reaction, and is later used in the process of the reaction.
  4. 7. The atomic number is identifies the number of ________ there is in an atom.
  5. 8. ________ could be any fossil fuel (methane, ethane, propane, butane), and is used in the process of combustion.
  6. 9. The four types of reactions are: Synthesis, ________, Single Displacement, and Double Displacement.
  7. 11. Known as the acid base reaction, this reaction’s reactants are acids and bases, and produce water and salt, this is also a double displacement action.
  8. 12. This scale measures the concentration of hydrogen and is stands for the “power of hydrogen”.
  9. 14. The law of conservation states that all atoms cannot be created or ________ .
  10. 15. The symbols of elements are printed in different colors, depending on their states. If black indicates solids, red indicates gasses, what color indicates liquids.
  11. 24. The products of a neutralization reaction is salt and ________.