Across
- 7. The loss of electrons in a chemical reaction.
- 9. State of matter with fixed shape and volume.
- 11. State of matter with no fixed shape or volume.
- 13. A reaction where one element replaces another.
- 14. Group 18 on the periodic table.
- 16. An element with properties of both metals and nonmetals.
- 18. A homogeneous mixture of two or more substances.
- 22. A substance that donates hydrogen ions.
- 25. Atoms of the same element with different numbers of neutrons.
- 27. Eight valence electrons — a stable arrangement.
- 28. Group 1 on the periodic table.
- 32. The amount of heat needed to raise one gram by 1°C.
- 33. Matter is not created or destroyed.
- 36. A reaction that breaks compounds apart.
- 37. Separates mixtures using boiling points.
- 40. Stored energy.
- 42. A solid that forms from a solution during a chemical reaction.
- 45. Group 17 on the periodic table.
- 47. A reaction that releases heat.
- 50. A reaction that absorbs heat.
- 54. A reaction between an acid and a base.
- 56. A measure of the amount of matter.
- 58. A measure of an atom's ability to attract electrons.
- 60. A negatively charged ion.
- 63. Positively charged particle in the nucleus.
- 64. A bond formed between oppositely charged ions.
- 65. A pure substance made of only one kind of atom.
- 67. The kind of table used to organize elements.
- 68. Energy of motion.
- 71. Discovered the nucleus with the gold foil experiment.
- 73. Type of change that does not alter chemical identity.
- 74. A measure of how much space an object occupies.
- 75. An atom or molecule with a charge; more or less electrons than protons.
- 76. A positively charged ion.
- 77. Elements that are shiny, malleable, and good conductors.
- 79. The substance being dissolved in a solution.
- 80. A bond formed when atoms share electrons.
- 81. Elements that are dull, brittle, and poor conductors.
Down
- 1. Layers of electrons around the nucleus.
- 2. Gas turning into liquid.
- 3. A substance that speeds up a chemical reaction.
- 4. Group 2 on the periodic table.
- 5. A solution with a pH of 7.
- 6. A reaction involving exchange of ions.
- 8. A type of metal found in the center of the periodic table.
- 10. Mass divided by volume.
- 12. A substance present before a chemical reaction.
- 15. A reaction that combines substances.
- 17. Number that tells how many atoms in a compound.
- 19. A reaction with oxygen that produces heat and light.
- 20. The gain of electrons in a chemical reaction.
- 21. Solid directly changing to gas.
- 23. A representation of a chemical reaction with arrows and + signs.
- 24. A substance that accepts hydrogen ions.
- 26. The scientist who proposed electrons orbit the nucleus.
- 29. A mixture of two or more metals.
- 30. A device to measure heat transfer.
- 31. Change from liquid to gas throughout the liquid.
- 34. The SI unit for the amount of substance.
- 35. Tool used to measure temperature.
- 36. Gas directly changing to solid.
- 38. The substance doing the dissolving in a solution.
- 39. A connection formed between atoms.
- 41. State of matter with fixed volume but no fixed shape.
- 43. Type of electrons involved in bonding.
- 44. A horizontal row on the periodic table.
- 46. A vertical column on the periodic table.
- 48. Number in front of compounds in a chemical equation.
- 49. The ability to conduct electricity.
- 51. A measure of average kinetic energy.
- 52. Negatively charged particle in an atom.
- 53. A method to find unknown concentration.
- 55. The smallest unit of an element.
- 56. A combination of substances not chemically bonded.
- 57. Change from liquid to gas at the surface.
- 59. A diagram that shows an atom's valence electrons.
- 61. The amount of solute that dissolves in solvent.
- 62. Substance that changes color in acid or base.
- 66. The ability to do work or cause change.
- 69. Type of change where a new substance is formed.
- 70. Neutral particle in an atom's nucleus.
- 72. The dense center of an atom.
- 73. A substance formed during a chemical reaction.
- 78. Number of protons in an atom.