Chemistry Review

1. A group of atoms bonded together, representing the smallest fundamental unit of a compound.
3. A positively charged ion formed when an atom loses electrons.
8. Energy: The energy required to remove an electron from an atom.
9. A type of bond formed when one atom transfers an electron to another.
14. The tendency of an atom to attract electrons in a bond.
18. Bond: A covalent bond with unequal sharing of electrons.
20. A negatively charged ion formed when an atom gains electrons.
21. Force: The force of attraction or repulsion between charged particles, central to ionic bonding.
22. Metals: Elements in Group 1 of the periodic table, known for their high reactivity.
24. Electrons: Electrons in the outermost energy level of an atom, involved in bonding.
25. Positively charged particles found in the nucleus of an atom.

2. Affinity: The energy change that occurs when an atom gains an electron.
4. Metals: Elements found in the central block of the periodic table, known for forming colorful compounds.
5. Table: A chart that organizes elements by atomic number and properties.
6. A mixture of metals, often enhancing properties like strength or corrosion resistance.
7. The process of removing an electron from an atom or molecule.
10. A type of bond formed when atoms share electrons.
11. A type of bond found between metal atoms where electrons are shared in a "sea" of electrons.
12. Gases: Group 18 elements, known for being inert due to a full outer electron shell.
13. Number: The number of protons in an atom's nucleus, defining the element.
15. Negatively charged subatomic particles involved in bonding.
16. Elements with properties between metals and non-metals, often found along the "staircase" line.
17. Bond: A covalent bond with equal sharing of electrons.
19. Rule: The concept that atoms strive to have eight electrons in their outer shell.
23. Radius: The distance from the nucleus to the outermost electron shell of an atom.