Chemistry Crossword

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.