Across
- 3. 2 or more atoms joined together, these can be the same or different types of atoms
- 8. Consists of only one type of atom,and cannot be broken down into smaller substances
- 10. A tiny piece of matter too small to be seen
- 11. A substance that cannot be broken down by microorganisms
- 12. A chain of linked molecules made up of groups of repeating atoms
- 13. A substance that can be broken down bye microorganisms
- 14. A chemical change that occurs when two or more substances combine to make a new substance
- 15. Arrangement of the parts of something such as the stem of a plant or the atoms in a molecule
Down
- 1. the way the parts of an atom are put together
- 2. The process of rearranging small molecules to form larger repeating chains of molecules call polymers
- 4. Any subtance made by human from a chemical reaction to for new materials
- 5. A ratio between 2 sets of measurements
- 6. A characteristic of a material that depends on the type and the arrangement of the atoms
- 7. The smallest unit of a chemical element
- 8. A long chain of sometimes thousands of molecules
- 9. A substance that has a constant proportion and arrangement
- 11. A material or substance found in nature and used by humans to meet a need
