Question: Answer the following question given this paragraph: Like strong acids, strong bases can be harmful to organisms and damaging to materials. Bases have a bitter taste and feel slimy to the touch. They can also burn the skin. Bases, like acids, can be identified with litmus paper. Bases turn red litmus paper blue. Q: What color does red litmus paper turn in the presence of a base? Choices: - green - purple - white - blue A:
Answer: blue

Question: Answer the following question given this paragraph: The earliest Earth did not have an atmosphere or free water. The planet was far too hot for gases and water to collect. The atmosphere and oceans that we see today evolved over time. The gases came from volcanic eruptions and from comets. Q: Gases on earth originated from comets and what events? Choices: - supernovas - black holes - tides - volcanic eruptions A:
Answer: volcanic eruptions

Question: Answer the following question given this paragraph: Metals can conduct electricity because they have free electrons. Q: Because they have free electrons, metals are able to conduct what? Choices: - sound - light - radiation - electricity A:
Answer:
electricity