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Name ______Date ______Block ______Matter Reference

1. – the smallest unit of an element that can still be identified as that element

2. proton – subatomic with a positive charge

3. –subatomic particles that do not have a charge; these particles are neutral

4. – subatomic particles with a negative charge

5. nucleus – the center of an atom which contains and at least one proton

6. – the amount of a substance

7. volume - the amount of space a substance occupies

8. density – the relationship between density and volume; calculated by dividing the mass by the volume

9. element – a pure substance with only one kind of atom; all the have the same

10. atomic number – the number of protons

11. – the mass of an atom

12. - an organized listing of atoms from lightest to heaviest

13. - a combination of two or more atoms that are joined together chemically

14. compound - a substance made of atoms of two or more elements that are chemically combined

15. melting point – the temperature at which a substance changes from a solid to a liquid

16. boiling point - the temperature at which a substance changes from a liquid to a gas

17. sublimation - changing directly from a solid to a gas

18. physical change - a change that does not make a substance into a new substance; one or more of a substance’s physical properties is changed

19. chemical change – a change in which one or more new substances are formed

1 Atoms 1 Properties of 2 Elements

2 Periodic Table 2 Reading the Periodic Table

Matter

3 3 Compounds

4 States of Matter

3 Mixtures 3 Solutions

5 Physical Changes 5 Chemical Changes