ATP Test

2. Negatively charged particle, located in the outermost shell of an atom
3. A chemical element that lacks the characteristics of a metal
5. The interatomic linkage that results from the sharing of an electron pair between two atoms
7. An element that forms positive ions and has metallic bonds
8. Basic unit of a chemical element
11. The system of electrons surrounding the nucleus of an atom
13. The chemical bonding that holds the atoms of metal together
15. A strong force of attraction holding atoms together
17. A table of the chemical elements arranged in order of atomic number in rows with elements with similar atomic structures in vertical columns.
20. The total number of protons and neutrons in a nucleus

1. Same mass as a proton but has no electric charge
4. A group of atoms bonded together, which is the smallest unit of a chemical compound that can go through a chemical reaction
6. The number of protons in the nucleus in an atom
9. Stable subatomic particle with a positive electric charge
10. The positively charged central core of an atom containing protons neutrons
12. Attraction between oppositely charged ions
14. Subatomic particle with a negative charge found in all atoms and is the primary carrier of electricity in solids
16. A column in the periodic table of the chemical elements
18. An atom or molecule with a net electric charge
19. One or two-letter abbreviation for an element