Across
- 3. substances formed after a chemical reaction occurs
- 6. the smallest units of matter that cannot be broken down in chemical reactions
- 9. matter with different properties than the original materials
- 10. a change where one or more new substances are formed
- 11. groups of atoms bonded together that make up substances
- 12. a measure that can change during a reaction due to energy transfer
Down
- 1. what happens to atoms during a chemical reaction when they form new molecules
- 2. a change where the substance stays the same but its form or state changes
- 4. the amount of matter in an object or substance
- 5. meaning kept the same and not lost or gained
- 7. what is absorbed or released during physical and chemical changes
- 8. substances present at the start of a chemical reaction