Chemistry Definitions

2. part or aspect of something abstract, especially one that is essential or characteristic.
4. The scientific study of the properties and behavior of matter.
6. Set of elements located in adjacent element groups.
8. subatomic particle with a positive electrical charge.
9. Takes up space and can be weighed.
11. The basic unit of a chemical element.
13. The total mass of particles of matter in an atom.
14. A table in which the chemical elements are arranged in order of increasing atomic number.
16. An elementary particle that has a negative charge of electricity and travels around the nucleus of an atom.

1. type of cell that receives and sends messages from the body to the brain and back to the body.
3. Representation of chemical elements using one or two letters.
5. The horizontal rows of the periodic table.
7. an atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
10. The number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.
12. The smallest particle of a substance that has all of the physical and chemical properties of that substance.
15. A column in the periodic table of the chemical elements.