Atoms and Elements

4. elements in a periodic table row and which change properties in a predictable pattern
5. smallest particle of an element
7. an atom that has taken on or lost electrons to become negatively or positively charged instead of neutral
9. two or more atoms joined together
12. a type of element that tends to be shiny, hard, malleable, ductile, and a good conductor
16. positively charged region in the center of an atom
17. can be pounded into shapes
18. positively charged particle
19. pure substance made of two or more elements that are combined chemically in a specific ratio
20. particle with no electric charge

1. two or more substances that are in the same place but not chemically combined
2. symbol, usually consists of a one or two letter abbreviation of the element name
3. negatively charged particle
6. an element that binds tightly to their atoms and conducts hardly any electricity.
8. the center of an atom that contains most of the mass of the atom in the form of positive protons and negative neutrons
10. mass, minus atomic number is how to find the number of neutrons in an atom
11. anything that has mass and takes up space
13. number, the number of protons and electrons in an atom
14. or family, elements in a periodic table column that have similar properties
15. simplest pure substance that can not be broken down into any other substance