Across
- 5. - the mass of one mole of a substance
- 7. - substances that undergo change in a chemical reaction
- 10. - a chemical reaction in which a compound breaks down into two or more simpler substances
- 11. - a chemical reaction that absorbs energy from its surroundings
- 12. - the energy stored in chemical bonds
- 13. - an amount of a substance that contains approximately 6.02 x 1023 particles of the substance
Down
- 1. reaction - a chemical reaction in which two compounds exchange positive ions and form new compounds
- 2. reaction - a chemical reaction in which one element takes the place of another element in a compound
- 3. - a chemical reaction that releases energy to its surroundings
- 4. - new substances formed as a result of a chemical reaction
- 6. - a representation of a chemical reaction in which the reactants and products are expressed as formulas
- 8. - a chemical reaction in which two or more substances react to form a single substance
- 9. - numbers that appear before a formula in a chemical equation to show the relative proportions of each reactant and product