Question

a venn diagram is used to compare and contrast different topics. the items that are unique to each topic are represented in the separate sections of the circles, and the items that are common to both topics are represented in the center overlapping sections. harlow creates this venn diagram comparing and contrasting endothermic and exothermic processes. what can be added to the examples section of each circle? endothermic: ice melting into water, and a heat pack becoming warm exothermic: a glow stick glowing, and fireworks exploding endothermic: ice melting into water, and an instant ice pack turning cold exothermic: fireworks exploding, and gasoline burning endothermic: a glow stick glowing, and a heat pack becoming warm exothermic: an instant ice pack turning cold, and ice melting into water endothermic: gasoline burning, and an instant ice pack turning cold exothermic: ice melting into water, and an instant ice pack turning cold

Explanation:

Step1: Recall endothermic and exothermic definitions

Endothermic processes absorb energy, exothermic release energy.

Step2: Analyze each option

• Option 1: Heat - pack becoming warm is exothermic not endothermic, so this option is wrong.
• Option 2: Ice melting into water (absorbs heat - endothermic), instant ice - pack turning cold (absorbs heat - endothermic), fireworks exploding (releases energy - exothermic), gasoline burning (releases energy - exothermic) are all correctly classified.
• Option 3: Glow stick glowing is exothermic not endothermic, instant ice - pack turning cold and ice melting into water are mis - classified for exothermic, so this option is wrong.
• Option 4: Gasoline burning is exothermic not endothermic, ice melting into water and instant ice - pack turning cold are mis - classified for exothermic, so this option is wrong.

Answer:

Endothermic: ice melting into water, and an instant ice pack turning cold
Exothermic: fireworks exploding, and gasoline burning