Across
- 3. Which element is in a toothpaste?
- 5. metal Which type of metal is Iron?
- 8. What are the horizontal rows of the periodic table called?
- 9. Who created the periodic table?
Down
- 1. What is more reactive than carbon,but less reactive than Magnesium
- 2. Which element can be found in both gas and liquid forms?
- 4. Element 82 is ___ reactive than element 50.
- 5. How many Isotopes does hydrogen have?
- 6. What is the name of the full-shelled elements?
- 7. The lightest element is __