Across
- 6. continuous physical force exerted on or against an object by something in contact with it
- 7. electrically neutral particles
- 8. negatively charged ion
- 9. a reaction accompanied by the absorption of heat
- 12. a science experiment that involves the use of fire
- 13. having a pH lower than 7
- 15. formula of a chemical compound is the simplest whole number ratio of atoms present in a compound
- 16. the emission of energy as electromagnetic waves or as moving subatomic particles
- 17. the degree or intensity of hotness or coldness present in a substance or object, especially as expressed according to a comparative scale
- 18. formed by the electrostatic attraction of oppositely charged ions
Down
- 1. a collection of particles called protons, which are positively charged, and neutrons, which are electrically neutral
- 2. the amount of space that a substance or object occupies
- 3. volume × density=
- 4. negatively charged particles
- 5. positively charged particles
- 6. ideal gas law
- 9. a measure of the attraction of an atom for bonding electrons in molecules compared to that of other atoms
- 10. rings that hold electrons
- 11. a reaction accompanied by the release of heat
- 14. a positively charged ion