Across
- 4. - Elements in Group 18, known for their lack of reactivity due to having full valence shells.
- 6. - A key element in DNA and ATP, essential for life.
- 7. - A solid that forms and settles out of a liquid mixture.
- 9. - The ability of an element to conduct electricity.
- 12. - A process used to separate solids from liquids or gases using a filter medium that allows only the fluid to pass through.
- 13. - A positively charged polyatomic ion, NH₄⁺.
- 17. - A compound with two sulfur atoms bonded to another element or group (e.g., carbon disulfide, CS₂).
- 20. - A type of chemical reaction where two or more simple substances combine to form a more complex product.
- 21. - The mass per unit volume of a substance.
- 22. - A region in an atom where there is a high probability of finding electrons.
- 24. - A material made up of two or more different substances which are not chemically combined.
- 25. - A lightweight, corrosion-resistant metal used in cans and foils.
- 26. - A substance that cannot be broken down into simpler substances by chemical means.
- 27. - The attraction between oppositely charged ions in a compound.
- 29. - A mixture which has uniform composition and properties throughout.
- 30. - The ratio of moles of one substance to the moles of another substance in a balanced equation.
- 31. - A substance that is formed as the result of a chemical reaction.
- 33. - Essential for respiration, the third most abundant element in the universe.
- 34. - A compound with four chlorine atoms bonded to another element (e.g., carbon tetrachloride, CCl₄).
- 36. - A noble gas used in light bulbs and welding.
- 37. - A metalloid used in semiconductors and computer chips.
- 39. - A salt of carbonic acid, containing the CO₃²⁻ ion.
- 40. - The most electronegative and reactive of all elements.
- 42. - Atoms of the same element with different numbers of neutrons.
- 44. - The temperature at which a solid becomes a liquid.
- 46. - The amount of product actually produced when the chemical reaction is carried out in an experiment.
- 48. - Variants of a particular chemical element which differ in neutron number.
- 50. - A compound with one oxygen atom bonded to another element (e.g., carbon monoxide, CO).
- 52. - Basic unit of a chemical element.
- 54. - A stable subatomic particle with a charge of negative electricity.
- 55. - A positively charged subatomic particle found in the nucleus of an atom.
- 58. - Elements with properties intermediate between metals and nonmetals.
- 61. - A unit for measuring the amount of substance.
- 63. - The substance in a solution that is dissolved by the solvent.
- 64. - A measure of the tendency of an atom to attract a bonding pair of electrons.
- 65. - The distance from the center of an atom's nucleus to its outermost electron.
- 67. - Used in disinfectants and PVC plastic.
- 68. - A vertical column in the periodic table, also known as a family of elements.
- 69. - Makes up about 78% of the Earth's atmosphere, essential for DNA.
- 71. - A subatomic particle of about the same mass as a proton but without an electric charge.
- 72. - An alkali metal, essential for human nutrition, commonly found in salt.
- 79. - A hard, gray metal, the second element in the alkaline earth metals group.
- 82. - The substance in a solution that dissolves the solute.
- 84. - The amount of product that could be formed from a reaction, assuming complete conversion of reactant to product.
- 85. - A measure of the amount of matter in an object, typically in grams or kilograms.
- 90. - A compound containing the NO₃⁻ ion.
- 91. - Elements in Group 2 of the periodic table, less reactive than alkali metals.
- 93. - A reaction in which a substance combines with oxygen, releasing energy in the form of light and heat.
- 96. - The tendency of a substance to undergo chemical reaction.
- 97. - The combining power of an element, especially as measured by the number of hydrogen atoms it can displace or combine with.
- 98. - A homogeneous mixture composed of two or more substances.
- 99. - The lightest and most abundant element in the universe.
- 100. - A table of the chemical elements arranged in order of atomic number.
- 101. - A reaction where one element displaces another in a compound.
Down
- 1. - The temperature at which a liquid turns to vapor.
- 2. - Used in matches, gunpowder, and fertilizers.
- 3. - A compound containing the PO₄³⁻ ion.
- 5. - The lightest metal and the first element in the alkali metals group.
- 8. - Elements in groups 3-12 known for their ability to form colorful compounds.
- 10. - A type of chemical bond formed through the electrical force between oppositely charged ions.
- 11. - A compound with two oxygen atoms bonded to another element (e.g., carbon dioxide, CO₂).
- 14. - A reaction in which a single compound breaks down into two or more simpler substances.
- 15. - A compound containing the OH⁻ ion.
- 16. - A measure of the concentration of a solute in a solution in terms of amount of substance in a given volume.
- 18. - A horizontal row in the periodic table.
- 19. - A reaction where ions exchange between two compounds to form new compounds.
- 23. - Attractive force between atoms or ions that enables the formation of chemical compounds.
- 28. - A compound formed with chlorine and another element.
- 31. - The ratio of the actual yield to the theoretical yield, multiplied by 100.
- 32. - A positively charged ion.
- 35. - Regions around the nucleus of an atom where electrons are likely to be found.
- 38. - Electrons in the outer shell of an atom that are involved in forming bonds.
- 41. - A mixture that composes of components that aren't uniform or they have localized regions with different properties.
- 43. - A negatively charged ion.
- 45. - The change in energy when an electron is added to a neutral atom to form a negative ion.
- 47. - The substance that is totally consumed when the chemical reaction is complete.
- 49. - A substance formed when two or more chemical elements are chemically bonded together.
- 51. - A lightweight metal used in aircraft construction and fireworks.
- 53. - Vertical columns in the periodic table, also known as families.
- 56. - A substance that takes part in and undergoes change during a reaction.
- 57. - A type of chemical bond involving the sharing of electron pairs between atoms.
- 59. - A class of elements characterized by physical properties that include shininess, malleability, ductility, and conductivity.
- 60. - An alkaline earth metal, essential for bones and teeth.
- 62. - A metalloid essential for plant growth and used in fiberglass.
- 66. - An atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
- 70. - A noble gas used in bright advertising signs.
- 73. - A noble gas commonly used in balloons, second lightest element.
- 74. - A compound with two bromine atoms bonded to another element (e.g., ethylene dibromide, C₂H₄Br₂).
- 75. - A substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
- 76. - A compound containing the CH₃COO⁻ ion.
- 77. - A compound typically formed by the combination of water molecules with an ionic compound.
- 78. - A highly reactive metal in Group 1 of the periodic table.
- 80. - Relating to the periodic table of the elements.
- 81. - Horizontal rows in the periodic table.
- 83. - An alkali metal, essential for plant growth and nerve function.
- 86. - The part of chemistry that deals with the quantities and numeric relationships of participants in a chemical reaction.
- 87. - A compound with the SO₄²⁻ ion.
- 88. - The ability of a substance to be drawn out into a thin wire.
- 89. - Elements in Group 17, known for being highly reactive nonmetals.
- 92. - A compound with three hydrogen atoms bonded to another element (e.g., boron trihydride, BH₃).
- 94. - The basis of organic chemistry, found in all known life forms.
- 95. - A compound with five oxygen atoms bonded to another element (e.g., phosphorus pentoxide, P₂O₅).