Across
- 3. when a gas is cooled
- 5. elements on the right in the periodic table
- 7. elements on the left in the periodic table
- 10. has only one type of atom
- 11. a three-dimensional structure of carbon
Down
- 1. the name of group 1 elements
- 2. all elements are listed in here
- 4. a column in the periodic table
- 6. a form of carbon that conducts electricity
- 8. when a substance is being heated
- 9. all substance are made out of