Across
- 4. A pure substance made of only one kind of atom, such as carbon.
- 5. Process that absorbs energy from the surroundings.
- 8. The smallest unit of an element that maintains the properties of that element.
- 11. Not easily reversed.
- 12. Anything with mass that occupies space.
- 13. The study of the composition, structure, and properties of matter and the changes it undergoes.
- 14. A property that can be observed and measured without changing the material's composition.
- 15. A substance that is made from atoms of two or more elements that are chemically bonded such as water or salt.
Down
- 1. Energy of motion
- 2. Only 1 visibly distinct phase, the phase has the same properties throughout.
- 3. 2 or more visibly distinct phases, each phase has very different properties.
- 6. Beginning substances that start a reaction.
- 7. Process that releases energy into the surroundings.
- 9. Matter that has a definite composition (element symbol or chemical formula).
- 10. Separates two or more mixtures by taking advantage of different boiling points.
- 14. Substances that are formed during the reaction.