1. Matter Vocabulary

2. __________________
matter
anything that has mass takes up space

3. __________________
property
describes an object (color, size, texture)

4. atom __________________
small particle that is the basic unit of matter

5. molecule __________________
two or more atoms chemically bonded together

6. density __________________
a physical property that describes the mass per unit volume of a substance
solid
gas
liquid

7. proton __________________
the positively charged particle in the nucleus of an atom

8. neutron __________________
a particle with no charge in the nucleus of an atom

9. electron __________________
negatively charged particles in an atom (in a cloud around the nucleus)

10. element __________________ matter made of only one type of atom
Examples: oxygen, calcium

11. Periodic Table __________________
a chart that organizes all known elements

12. compound __________________
matter made by combining two or more different kinds of elements
Examples: water

13. chemical formula __________________
a formula composed of symbols and numbers that shows which elements make the compound
Example: H2O

14. mixture __________________
two or more substances put together that do not form a compound
Example: rocks, air

15. __________________
mass
a measure of the amount of matter in an object

16. chemical equation __________________
symbols that show how matter changes during a chemical reaction

17. reactants __________________
Substance that is changed during a chemical reaction

18. products __________________
new substance created during a chemical reaction