Question

b. breaking the graham crackers into two pieces
c. roasting the marshmallows
d. melting the chocolate

1. after a particularly rainy spring, karen and amanda could no longer bear to stay indoors and, with the first sign of fair weather, ventured outside for a walk through the park. as they passed the jungle gym, they noticed that the iron monkey bars looked different. what can you do to pure, solid iron to chemically change it?

a. cut it
b. melt it
c. bend it
d. oxidize it

Explanation:

1. For the s'more - making question: Breaking crackers and melting chocolate are physical changes. Roasting marshmallows is a chemical change as it involves a chemical reaction due to heat, changing the marshmallow's chemical composition.
2. For the iron question: Cutting, melting, and bending iron are physical changes. Oxidizing iron (rusting) is a chemical change as it involves iron reacting with oxygen to form iron oxide, changing its chemical identity.

Answer:

1. c. Roasting the marshmallows
2. d. Oxidize it