Across
- 4. a positive atom charge
- 5. whats used in chemistry to show chemical compounds/mixtures
- 7. What atoms of the same type are called when grouped together
- 10. elements
- 11. a building block
Down
- 1. a neutral atom charge
- 2. what the element letter C stands for
- 3. different substances that are non chemically bonded together
- 6. anything that has mass and takes up space
- 8. a negative atom charge
- 9. contains two or more different chemically