Chemistry Fun

4. A type of bond formed by the transfer of electrons between a metal and a nonmetal.
5. The group 17 elements that are highly reactive nonmetals.
6. A substance that speeds up a chemical reaction without being consumed.
8. Molecules with the same molecular formula but different structural arrangements.
9. The name for electrons in the outermost shell of an atom.
11. The emission of light by a substance without combustion or perceptible heat.
15. The substance in a solution that does the dissolving (usually water).
16. The process in which an atom loses electrons during a reaction.
17. A measure of how strongly an atom attracts electrons in a chemical bond.
18. An insoluble solid that forms and settles out of a liquid mixture.
19. The process in which an atom gains electrons during a reaction.

1. The subatomic particle that determines an element's identity.
2. The SI unit used to measure the amount of a substance (6.022×1023 particles).
3. A technique used to determine the concentration of an unknown solution.
4. Atoms of the same element with different numbers of neutrons.
7. A reaction that absorbs energy from the surroundings.
10. A type of bond where electrons are shared between two nonmetals.
12. A reaction that releases energy in the form of heat to the surroundings.
13. Different physical forms in which an element can exist (e.g., graphite vs. diamond).
14. The law stating that physical and chemical properties of elements recur in a predictable way.