Question

2
Look at the graph above representing two different chemical reactions.

What kind of reaction and what kind of temperature change is happening for Reaction B?

Graph shows how temperature changes over time for reactions A and B. Both are initially constant, then A goes up and B down

A
Type of reaction: Exothermic

Temperature change: Increase


B
Type of reaction: Exothermic

Temperature change: Decrease


C
Type of reaction: Endothermic

Temperature change: Increase


D
Type of reaction: Endothermic

Temperature change: Decrease

2
Look at the graph above representing two different chemical reactions.

What kind of reaction and what kind of temperature change is happening for Reaction B?

Graph shows how temperature changes over time for reactions A and B. Both are initially constant, then A goes up and B down

A
Type of reaction: Exothermic

Temperature change: Increase


B
Type of reaction: Exothermic

Temperature change: Decrease


C
Type of reaction: Endothermic

Temperature change: Increase


D
Type of reaction: Endothermic

Temperature change: Decrease

Answer 1

Based on the description of the graph, Reaction B shows a decrease in temperature over time. This indicates that the reaction is absorbing heat from its surroundings. Therefore, Reaction B is:

- **Type of reaction:** Endothermic
- **Temperature change:** Decrease

The correct answer is **D: Type of reaction: Endothermic; Temperature change: Decrease.**