Question: Q: Which type of weathering causes changes int he rocks materials, chemical or mechanical? Choices: - liquid - nuclear - mineral - chemical A:
Answer: chemical

Question: Q: What is the common term for the chemical formula h 2 0? Choices: - hydrogen - air - oxygen - water A:
Answer: water

Question: Q: Physical science is defined as the study of what? Choices: - light & matter - biology & light - matter & elements - matter & energy A:
Answer:
matter & energy