Across
- 2. How many electrons does hydrogen have?
- 6. What atom has a positive charge?
- 9. What kind of mixture is a cookie?
- 10. What is the matter made of?
Down
- 1. What element has the smallest atomic mass found on Earth?
- 3. What is gold?
- 4. What element is this: Ti?
- 5. What element is this: C?
- 7. How many electrons does the first electron ring hold?
- 8. Which atom has a negative charge?