Chemistry 8

2. Consisting of two atoms
5. The positively changed dense center of an atom
7. An atom or molecule that carries an electrical charge
8. The smallest component of an element having the chemical properties of the element
9. The vertical row on the periodic table
11. A particle smaller than an atom
14. Are the chemical elements found in Group 1 of the periodic table.
16. They are most active of the non-metals, and form compound with elements
17. Any of the more than 100 known substances that cannot be separated into simpler substances and that singly or in combination all matter
18. Negatively charged subatomic particle charges and that is found in the nucleus of an atom
19. A subatomic particle that has no charge and that is found in the nucleus of an atom

1. A subatomic particle that has a positive charge and that is found in the nucleus of an atom
3. An electric charge that forms on an atom when it gains or loses electrons
4. The theory that all matter is made up of tiny particles (atoms)
6. Consisting of many atoms
8. The number at bottom of the little box - represents the weight of an atom
10. The electron(s) in the outermost shell of the atom
12. Characteristics that can only be determined with a chemical reaction
13. The outermost shell of the atom
15. The number at the top of the little box -represent the number of protons in the nucleus of an atom