Across
- 4. identify how many atoms of each element are in the most basic unit of a compound (small number)
- 6. used by scientists to name substances and show their chemical makeup
- 7. in a chemical reaction _______ break and atoms rearrange
- 8. a unexpected solid formed by combining two liquids that undergo a chemical reaction
- 9. the rule that during a chemical reaction, matter is not created or destroyed
- 11. a chemical reaction where energy is absorbed and temperature usually decreases
- 12. a chemical reaction where energy is given off in the form of heat or light
Down
- 1. the new substances that form in a chemical change
- 2. one or more substances changes into new substances with different chemical makeups
- 3. identify the number of molecules of a compound that are present in a chemical equation (big number)
- 5. a change in matter that does not involve a change in chemical makeup
- 10. a substance that goes through a chemical change