Question

tuesday 9/23 which of the following is a physical change? a. iron rusting b. paper burning c. butter melting d. acid dissolving metal 6th grade review the breaking down of rocks or sediments is known as a. chemical weathering b. physical weathering

Explanation:

Physical changes do not result in new substances. Butter melting is a change of state from solid to liquid without forming a new substance. Iron rusting, paper burning, and acid - dissolving metal are chemical changes as new substances are formed. The breaking down of rocks or sediments is physical weathering when it is just a physical breakdown without a chemical reaction changing the substance's composition.

Answer:

For the first question: C. Butter melting
For the second question: b. Physical Weathering