Across
- 3. The tiny building block of matter.
- 4. A bitter substance that neutralizes acids.
- 6. State of matter that flows and takes the shape of a container.
- 9. When substances interact and change into new ones.
- 10. A scale that measures acidity or basicity of a solution.
- 11. A group of atoms bonded together.
Down
- 1. State of matter that spreads to fill its container.
- 2. State of matter that has a fixed shape and volume.
- 5. A substance made up of only one type of atom.
- 7. A sour substance that can react with metals and others.
- 8. A substance made by combining two or more elements.