Question

1. sketch each scenario, including the movement of heat in or out of the object

a. an ice cube melting
exo
b. someone running a marathon and sweating
exo
c. baking a cake
exo
d. water freezing into ice
endo
e. lighting a match
exo

Explanation:

Step1: Define endothermic and exothermic

Endothermic - absorbs heat, exothermic - releases heat.

Step2: Analyze ice - cube melting

Ice cube absorbs heat to melt, so it's endothermic.

Step3: Analyze marathon - running and sweating

The body releases heat through sweating during exercise, exothermic.

Step4: Analyze baking a cake

The oven supplies heat to the cake mixture, heat is absorbed, endothermic.

Step5: Analyze water - freezing into ice

Water releases heat to freeze, exothermic.

Step6: Analyze lighting a match

A match releases heat and light when lit, exothermic.

Answer:

a. Endothermic
b. Exothermic
c. Endothermic
d. Exothermic
e. Exothermic