Across
- 3. A group of atoms bonded together.
- 6. The smallest unit of an element.
- 7. A substance made of two or more elements chemically combined.
- 9. A state of matter with no fixed shape but a fixed volume.
- 10. The building blocks of everything in the universe.
Down
- 1. A type of matter that consists of only one kind of atom.
- 2. A form of matter with a uniform and definite composition.
- 4. A state of matter that expands to fill its container.
- 5. A state of matter that has a definite shape and volume.
- 8. A combination of two or more substances that are not chemically combined.