Across
- 2. What is He on the periodic table
- 5. the periodic table is made up of
- 6. when molecules have 2 or more different types of atoms
- 7. what is H2O?
- 9. all matter can be classified as a mixture or a _________
Down
- 1. atoms that are grouped together
- 3. has mass and takes up space
- 4. what does the formula C6 H12 O6 make
- 6. what is chlorine on the periodic table
- 8. makes up matter