Chemistry Vocab

3. The small, lowered number that indicates the number of atoms of one element in a formula.
6. Smallest unit of matter
7. A negatively charged particle found outside the nucleus of an atom.
8. Type of property that can only be observed by changing the chemical makeup.
11. Stands for atomic mass unit; the unit used to measure the mass of an atom.
12. Two or more atoms bonded together.
15. A positively charged particle in the nucleus of an atom
18. Anything that has mass and takes up space
20. Type of property that can be observed without changing the chemical makeup.
21. Horizontal row on a periodic table
22. A shorthand way to represent a chemical reaction is a chemical ____.
23. The number of protons plus the number of neutrons

1. A shorthand way to represent an element is a chemical_____.
2. An organized chart of the periodic table
4. Tells the number of protons in one atom of an element
5. A shorthand way to represent the chemical makeup of a compound is a chemical___.
9. Vertical column on a periodic table
10. A particle in the nucleus of an atom with no charge
13. The large number next to a chemical formula that tells how any molecules there are.
14. A pure substance made up of one type of atom.
16. Where protons and neutrons are found in an atom.
17. Two or more DIFFERENT atoms bonded together
19. Electron found in the outermost energy level that forms bonds with other atoms.