Q: What two types of atoms bond to form sulfate minerals? Choices: - oxygen and carbon - oxygen and calcium - carbon and sulfur - oxygen and sulfur A:
oxygen and sulfur

Q: The pion can only be created by violating the conservation of what? Choices: - quantum physics - time-space - momentum - mass-energy A:
mass-energy

Q: What are compounds with the same molecular formula but different structures and properties called? Choices: - substrates - monomers - polymers - isomers A:
isomers