Across
- 2. Substance with two or more elements chemically combined
- 5. Atoms with the same number of protons and different number of neutrons
- 6. Properties used to describe ____ can be classified as extensive or intensive
- 9. Simplest form of matter
- 11. Smallest particle of an element
Down
- 1. Form of matter with a definite shape and volume
- 3. Vertical on the periodic table
- 4. Liquid is boiled to produce vapor
- 7. Positive subatomic particles
- 8. Subatomic particle with no charge
- 10. During any chemical reaction the ____ of the products is always equal to the ____ of the reactants