Chemical Reactions & Bonding

Learn ionic and covalent bonding and balance simple equations.

9 questions, free, marked as you go with a worked explanation on every one.

What this covers

• chemical bonding and reactions

The questions

1. An ionic bond forms between a metal and a:
2. A bond formed by sharing electrons between two non-metals is called a(n):
3. In the reaction 2H₂ + O₂ → 2H₂O, how many hydrogen atoms are on each side of the equation?
4. What is conserved in every chemical reaction, according to the Law of Conservation of Mass?
5. In the reaction 2H₂ + O₂ → 2H₂O, how many oxygen atoms are on each side?
6. How many atoms in total are in one formula unit of calcium nitrate, Ca(NO₃)₂?
7. In a sealed container, 12.0 g of carbon reacts completely with 32.0 g of oxygen to form carbon dioxide. By the law of conservation of mass, what mass of carbon dioxide is produced?
8. When an ionic bond forms, a metal atom transfers electrons to a non-metal atom. What is the metal atom called afterwards?
9. Use the table. Which reaction type is 2H2 + O2 -> 2H2O an example of?

Answer these free