Question

question 38 not yet answered marked out of 1.00 flag question is the following description a chemical or physical change? melting ice. select one: a. chemical b. physical question 39 not yet answered marked out of 1.00 flag question is the following description a chemical or physical change? burning popcorn. select one: a. chemical b. physical question 40 not yet answered marked out of 1.00 flag question is the following description a chemical or physical change? digesting food. select one: a. chemical b. physical question 41 not yet answered marked out of 1.00 is the following description a chemical or physical change? molding clay. select one:

Explanation:

• Question 38: Melting ice only changes water from solid to liquid; no new substance forms, so it is a physical change.
• Question 39: Burning popcorn transforms its chemical composition (producing new substances like carbon, gases), so it is a chemical change.
• Question 40: Digesting food breaks down molecules into new substances (e.g., glucose from carbs), so it is a chemical change.
• Question 41: Molding clay only changes its shape; no new substance is created, so it is a physical change.

Answer:

Question 38: b. Physical
Question 39: a. Chemical
Question 40: a. Chemical
Question 41: b. Physical