Across
- 1. Matter is composed of particles packed so loosely
- 3. Matter is composed of tightly packed particles
- 4. Can exist in solid, liquid, or gas
- 6. A group of 2 or more atoms held together
- 8. Matter is made of more loosely packed particles
- 9. A pure substance made of 2 or more elements
Down
- 2. A single type of matter that is pure
- 5. A basic particle from which all elements are made
- 7. A pure substance that cannot be broken down