Question

A chemical reaction has the following temperature data: Item 17 page 1 of 1 COURSE TOOLS Initial Temperature: 20°C Item 18 Final Temperature: 10°C Item 19 Based on this data, what type of reaction occurred and how do you know? Item 20 (1 point) Item 21 Exothermic, because heat was released into the surroundings Item 22 Exothermic, because the temperature of the reaction decreased Item 23 Endothermic, because heat was absorbed from the surroundings Endothermic, because the temperature of the surroundings increased

Answer 1

Based on the temperature data provided (initial temperature of 20°C and a final temperature of 10°C), the type of reaction that occurred is:

**Endothermic, because heat was absorbed from the surroundings.**

In an endothermic reaction, the system absorbs heat, leading to a decrease in temperature of the surroundings. Since the final temperature is lower than the initial temperature, it indicates that heat has been absorbed from the surroundings into the reaction. Thus, the correct answer is:

**Endothermic, because heat was absorbed from the surroundings.**