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4th Grade Chemistry
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4th Grade Chemistry
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25 Questions

1. a mixture created when something dissolves into another so that each cannot be distinguished

2. British chemist who revived Democritus's early ideas about the atom

3. the amount of space a thing occupies

4. pure substances that cannot be broken down any farther. A(n) __________________________ contains one kind of atom.

5. the absence of matter

6. :the amount of matter in an object relative to the space the object fills. ________________________ describes the relationship of mass to volume.

7. the scientist who discovered electrons

8. tried to turn common metals into gold

9. the parts of the nucleus

10. the substance that dissolves. The salt in saltwater

11. the scientist who discovered the nucleus and protons

12. the parts of an atom

13. atomic number =

14. atomic mass - atomic number =

15. the negative particles of an atom

16. matter is made up of these

17. the substances that something dissolves into. The water in saltwater.

18. everything around you; it is the material of the universe

19. the center of the atom, containing the neutrons and protons

20. when elements combine physically

21. particles with the same charge ____________ one another

22. particles with a different charge ____________ one another

23. drawing used to help us understand atoms

24. the amount of matter in an object

25. the Russian scientist who ordered elements according to their atomic weight and the creator of the periodic table

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