Chemistry Vocabualry

3. anything that occupies space and has mass.
4. a group of atoms held together by covalent bonds.
5. consist of atoms of two or more elements that are joined to chemical bonds.
6. a substance that cannot be broken down chemically into simpler kinds of matter.
12. having a regular, repeating pattern.
13. substance that is doing the dissolving.
15. elements that are dull (not shiny) and that are poor conductors of thermal energy and electric current.
17. the ability of one substance to dissolve another.
18. an atom with an electrical charge (+ or -).
19. a mixture that appears to be a single substance but is composed of particles of two or more substances that are distributed evenly amongst each other.

1. elements that are shiny and are good conductors of thermal energy and electric current.
2. each vertical row of elements on a periodic table.
4. two or more substances mixed together whose composition is not fixed.
7. the part of an atom that has no electrical charge.
8. each horizontal row of elements on a periodic table.
9. substance that is being dissolved
10. the fundamental unit of matter that contains a nucleus, protons, neutrons, and electrons.
11. atoms of the same element that differ in the number of neutrons they contain.
12. the part of an atom that has a positive electrical charge.
14. the part of an atom that has a negative electrical charge.
16. semiconductors that are elements that have properties of both metals and nonmetals.