Across
- 3. _____model is an early atomic model depicting electrons orbiting the nucleus
- 4. resulting substance(s) formed in a chemical reaction
- 6. ________ chemical reaction absorbs heat from its surroundings during a chemical reaction
- 7. neutrally charged subatomic particle found in the nucleus
- 9. numeric factor indicating the quantity of a substance in a chemical reaction
- 10. positively charged particle found in the nucleus
- 12. _________Chemical reaction releases heat to its surroundings during a reaction
- 13. basic unit of matter, consisting of protons neutrons and electrons
Down
- 1. small number indicating the number of atoms in a molecule
- 2. rapid reaction with oxygen which produces water and Carbon dioxide
- 5. combination of substances to form a more complex product
- 6. negatively charged particle found in the electron cloud
- 8. substance entering a chemical reaction (Left side)
- 11. breakdown of a compound into simpler substances