Across
- 1. the starting substances in a chemical reaction
- 4. the substances produced by the chemical reaction
- 7. is a process in which atoms of one or more substances rearrange to form one or more new substances
- 8. is a description of a reaction using element symbols and chemical formulas
- 10. states that the total mass of the reactants before a chmiecal reaction is the same as the total mass of the products after the chemical reaction
Down
- 2. a type of chemical reaction in which one element replaces another element in a compound
- 3. a chemical reaction in which a substance combines with oxygen and releases energy
- 5. a type of chemical reaction in which one compound breaks down and forms two or more substances
- 6. a type of chemical reaction in which two or more substances combine and form one compound
- 9. is a number placed in front of an element symbol or chemical formula in an equation