Chemistry classroom

123456789101112
Across
  1. 3. The number of protons in an atom
  2. 5. The weighted average of the masses of the isotopes that compose an element
  3. 6. A compound that increases the amount of H+ ions in an aqueous solution
  4. 10. A substance that cannot be broken down into simpler chemical substances by ordinary chemical means
  5. 11. The connection between two atoms in a molecule
  6. 12. A concise way of representing a chemical reaction
Down
  1. 1. The study of the interactions of matter with other matter and with energy
  2. 2. The process of a gas becoming a liquid
  3. 4. The process of an ionic compound separating into ions when it dissolves
  4. 7. The movement of gas molecules through one or more additional types of gas via random molecular motion
  5. 8. A combination of more than one element
  6. 9. A physical property defined as a substance’s mass divided by its volume