Chemistry 8

4. Characteristics that can only be determined with a chemical reaction
6. The vertical row on the periodic table
7. The outermost shell of the atom
11. The theory that all matter is made up of tiny particles (atoms)
12. Negatively charged subatomic particle charges and that is found in the nucleus of an atom
13. An atom or molecule that carries an electrical charge
14. The positively changed dense center of an atom
15. Consisting of two atoms
16. They are most active of the non-metals, and form compound with elements
18. Are the chemical elements found in Group 1 of the periodic table.

1. The number at the top of the little box -represent the number of protons in the nucleus of an atom
2. A subatomic particle that has no charge and that is found in the nucleus of an atom
3. The electron(s) in the outermost shell of the atom
5. A particle smaller than an atom
8. Any of the more than 100 known substances that cannot be separated into simpler substances and that singly or in combination all matter
9. Consisting of many atoms
10. A subatomic particle that has a positive charge and that is found in the nucleus of an atom
17. The smallest component of an element having the chemical properties of the element
19. An electric charge that forms on an atom when it gains or loses electrons
20. The number at bottom of the little box - represents the weight of an atom