Chemistry Vocabulary

1. a substance that cannot be broken down into simpler substances by chemical means
2. mixture a mixture in which substance are not distributed evenly; example: a salad, pepperoni pizza, dirt
5. two or more atoms held together by bonds
7. particles found inside the nucleus with a positive charge
8. measure of the amount of matter in a substance
10. a characteristic of a substance that cannot be observed without changing the identity of the substance
12. any substance, usually liquid, which is capable of dissolving one or several substances, thus creating a solution
14. matter made up of two or more substances that are no joined chemically
15. horizontal row on the Periodic Table
17. a characteristic of substance that can be observed directly (what you can see, what you can feel, what you smell) or can be measured with a tool without changing the identity of the substance
18. particles found inside the nucleus of every atom

1. particles with a negative electricity found within all atoms
2. a mixture in which substances are evenly distributed; example: a solution, milk, sugar water
3. vertical column on the Periodic Table; elements in the column share similar properties; also known as a Family
4. a constant term related to the properties of a product
6. a pure substance that forms when two or more elements join chemically in a fixed proportion
9. number the number of protons in the nucleus of an atom; found in top of element box
11. the basic unit of a chemical element
13. a character, usually a letter or number, that's printed slightly below and to the side of another character.
16. the ability of a substance to be hammered or beaten into thin sheets