Question: Q: What substance are physical objects are made of? Choices: - gravity - energy - friction - matter A:
Answer: matter

Question: Q: What is a factor in determining weight but not mass? Choices: - function - material - gravity - location A:
Answer: location

Question: Q: What is the term for a solution that resists dramatic changes in ph? Choices: - inert - neutral - stable - buffer A:
Answer:
buffer