Across
- 3. a table that represents all of the elements
- 4. anything that has mass or takes up space
- 6. vertical row of the periodic table
- 7. one type of element/atom
- 8. building blocks
Down
- 1. two different types of atoms chemically bonded
- 2. atoms of the same type grouped together
- 3. the horizontal row of the periodic table
- 5. a metal mixed with at least one other element a pure substance
- 7. not chemically bonded together