Chemistry Vocabulary #2

3. Smallest unit of matter
7. a group of atom chemically combine. (2 or more atoms)
8. The amount of matter in a given amount of space
12. “Potential” to go through a chemical change. Can be seen in a chemical reaction.
14. Level The rings around the nucleus of an atom
16. Goes from Side to Side on the Periodic Table and tells the number of energy levels.
17. Changes in the States of Matter. Change the phase or shape but not the substance.
20. A pure substance containing only one type of atom
21. Has properties of both metals and nonmetals and is along the zig–zag line on the periodic table
22. The part of an atom that does not have a charge
23. Goes Up and Down on the Periodic Table, Tells how reactive an element is and similar
24. The negative part of an atom

1. Describes and element. Can be observed without changing the element
2. The positive part of an atom.
4. Electrons in the outermost energy level
5. Number of Molecules in a chemical formula.
6. Elements that combine for form a new substance
9. The number of atom of an element in a chemical formula
10. Chemical symbols that represent a compound
11. The number of protons in an atom
13. A brittle, dull, and insulator material that is on the right side of the periodic table.
15. How something interacts with something else
18. A shiny, malleable, ductile, and conductive material on the left side of the periodic table.
19. Two or more different kinds of atoms. (2 or more elements)
22. Center of an atom with a positive charge