Across
- 5. indicates the number of atoms of each element
- 9. each element is represented by this
- 11. this is used to represent a compound
- 13. a process in which one or more substances are converted to one or more different substances
- 14. protons have this type of charge
Down
- 1. atoms are the building _______ of all matter
- 2. change which alters the physical properties of a substance without changing its identity
- 3. the formation of a new substance through a reaction
- 4. what we use to identify different elements
- 6. a pure substance made by chemically combining two or more elements
- 7. table that displays the chemical elements
- 8. electrons have this type of charge
- 10. if the subscript is changed the ______ is changed
- 12. the most basic unit of matter