Across
- 2. Atoms of the same element that have a different mass
- 3. a unique substance with a specific amount of protons
- 5. This scientist created a dot structure used to visualize electrons. This structure was named after him
- 6. The branch of science that studies properties and behaviors of substances
- 8. A molecule made out of two or more elements
Down
- 1. A predication made about something that can be seen through observations
- 4. The center of the atom where most of the mass is held
- 7. The negatively charged subatomic particle with very little mass