Across
- 3. a chemical _____ uses symbols and formulas to show chemical reactions
- 5. the # of molecules in a substance
- 9. substance made of the combined atoms of two or more elements
- 10. a chemical ____ is one or two letters used to represent an element
- 13. type of bond that is formed in HCl
- 15. a type of reaction in which heat is absorbed
- 16. type of bond that involves two metals
Down
- 1. a process in which substances undergo chemical change
- 2. the substances that are formed in a chemical reaction
- 4. tells what elements a compound contains and the exact number of the atoms of those elements
- 6. a chemical ____ is a combination of symbols that shows the ratio of elements in a compound
- 7. type of bond that is formed in NaCl
- 8. the # of atoms of each element in the molecule
- 11. the substances that undergo the chemical reaction
- 12. a type of reaction in which heat is given off
- 14. a solid that forms from a solution during a chemical reaction