Across
- 1. an ending substance that is made during a chemical reaction
- 3. a process in which atoms rearrange to form new substances (two words)
- 4. Building block of all matter
- 6. to change the order or position of something
- 9. something that is made of all the same atoms or groups of atoms
- 10. a group of atoms joined together in a particular way
- 11. a starting substance that is part of a chemical reaction
Down
- 2. letters and numbers showing the types and number of atoms that repeat to make up a substance (two words)
- 5. something that can be observed about a substance, such as color, smell, or boiling point
- 7. A chemical reaction that produces heat as a product
- 8. A chemical reaction that absorbs heat from its environment