Vocabulary Familiarization

4. A number placed in front of a chemical formula in a balanced chemical equation to indicate the number of molecules or atoms involved.
5. A solid that forms from a solution during a chemical reaction.
6. The percentage by mass of each element in a compound.
8. of Conservation of Matter States that matter cannot be created or destroyed in a chemical reaction, only rearranged.
10. A chemical reaction in which a compound breaks down into two or more simpler substances.
11. reaction A type of chemical reaction where two compounds exchange positive ions to form two new compounds.
13. The number of atoms, ions, or molecules in one mole of a substance; approximately 6.022 × 10^23.
15. The mass of one mole of a substance; expressed in grams per mole (g/mol).
17. A process that involves the rearrangement of atoms to form new substances.
19. A chemical reaction in which two or more substances combine to form a single, more complex substance.
20. A chemical reaction involving the rapid combination of a substance with oxygen, often producing heat and light.

1. The ratio of the amounts of substances in a chemical reaction, as determined by the coefficients in the balanced equation.
2. A symbolic representation of a chemical reaction, showing the reactants and products.
3. reaction A type of chemical reaction where one element replaces another element in a compound.
7. A compound that has water molecules loosely bonded to its ions.
9. A formula that specifies the actual number of atoms of each element in a molecule of a compound.
12. The substances that undergo a chemical reaction.
14. A formula that shows the simplest whole-number ratio of atoms in a compound.
16. A unit of measurement used in chemistry to express amounts of a substance.
18. The substances that are formed as a result of a chemical reaction.