1. Review Activity 8th Grade Science
Bonding Basics
Review Activity
8th Grade Science
T. Trimpe

2. A positively charged ion
1. Complete the chart using your knowledge of atoms.
Vocab Review
1 – What do we call the electrons in the outermost energy level?
2 – What term refers to an atom that has lost or gained electrons?
3 – What is a cation?
4 – What is an anion?
Valence Electrons
Ions
A positively charged ion
A negatively charged ion

3. 2. Ionic Bonds - Draw the Lewis structures for each atom, draw arrows to show the transfer of electrons, write the charge for each ion, and then write the chemical formula.
(A) Potassium + Iodine (B) Magnesium + Oxygen
(C) Lithium + Nitrogen

4. 3. Covalent Bonds – Draw the Lewis structures for each atom, draw circles to show the electrons that are shared, and then write the bond structure and chemical formula.
(A) Fluorine + Fluorine (B) 3 Hydrogen + 1 Phosphorus
(C) 2 Hydrogen + 1 Sulfur