Across
- 3. The total mass of the reactants before a chemical reaction is the same as the total mass of the products after the chemical reaction.
- 7. A type of chemical reaction in which two or more substances combine and form one compound.
- 8. A description of a reaction using element symbols and chemical formulas.
- 9. The substances that are produced by a chemical reaction.
Down
- 1. A process in which atoms of one or more substances rearrange to form one or more new substances.
- 2. Number placed in front of an element symbol or chemical formula in an equation.
- 4. Small number after a chemical symbol that shows the number of atoms of each element in a compound.
- 5. Type of chemical reaction where a substance combines with oxygen and releases energy.
- 6. The starting substances in a chemical reaction.