Across
- 7. A characteristic that describes a substance, such as size, shape, and texture.
- 8. Matter that is shapeless and expands to fill any closed container it is placed in.
- 11. A subatomic particle that has a positive charge.
- 12. A fundamental substance that cannot be broken down by simple chemical and physical processes.
- 13. A colorless, odorless, gaseous element that makes up about 78% of Earth’s atmosphere.
- 15. Matter that has a definite shape.
- 18. Energy sent out into space by an energy source.
Down
- 1. The center of an atom.
- 2. Particles made of two or more atoms that are held together with bonds. Carbon dioxide (CO2), sugar (C6H12O6), water (H2O), oxygen (O2), and hydrogen (H2) are examples of molecules.
- 3. A group of carbon-based nutrients, such as sugars and starches
- 4. A subatomic particle with a negative charge.
- 5. A repeating pattern.
- 6. The number of protons in the nucleus of an atom
- 9. The smallest particle of an element
- 10. A subatomic particle with no charge.
- 14. A substance made of two or more different kinds of atoms. Carbon dioxide (CO2), sugar (C6H12O6), and water (H2O) are compounds. Oxygen (O2) and hydrogen (H2) are not compounds.
- 16. Anything that has mass and takes up space.Metal
- 17. Matter that flows and takes the shape of the container it is in.