You "Matter"

3. Pure substance made of only one type of atom (ex. oxygen, hydrogen, carbon).
4. The symbol C stands for which element?
5. The basic unit of matter defines the structure of elements. (Has protons, neutrons, and electrons)
6. _______ Point – The temperature at which a liquid changes to a gas.
10. ANY 2 or more atoms bonded together.
11. 2 or more DIFFERENT atoms bonded together.
13. Has neither a definite shape nor volume.
14. Has a definite volume but no definite shape.

1. _______ Point – The temperature at which a liquid changes to a solid.
2. Anything that has mass and takes up space.
4. Uses symbols and numbers to show which elements and how many atoms are in a compound (ex. H₂O for water).
7. _______ Change – A new substance is formed (ex. burning wood to make ash).
8. Has a definite shape and volume.
9. Styrofoam floats on water because its _______ is less than water.
11. The study of substances and how they change.
12. _______ Change – A change where the substance stays the same (ex. melting ice).