Question: Q: What color does red litmus paper turn in the presence of a base? Choices: - green - purple - white - blue A:
Answer: blue

Question: Q: Gases on earth originated from comets and what events? Choices: - supernovas - black holes - tides - volcanic eruptions A:
Answer: volcanic eruptions

Question: Q: Because they have free electrons, metals are able to conduct what? Choices: - sound - light - radiation - electricity A:
Answer:
electricity