Across
- 2. What do we call a group of the same or different atoms?
- 5. What is a negatively charged atom called?
- 6. Two or more different elements combined to form a new pure substance
- 7. What is a pure substance made up of only one type of atom?
Down
- 1. what do we call the bond between positive and negative atoms?
- 3. What do we call the bond between atoms SHARING electrons?
- 4. If an atom LOSES electrons, what charge does it have?
- 6. What is a positively charged atom called?
- 8. How many electrons are needed in the valence shell for an atom to be stable?