Exothermic and Endothermic Reactions Explained

The video tutorial explains the differences between exothermic and endothermic processes. Exothermic processes release heat, making the surroundings warmer, as seen in lighting a match or a car engine. Endothermic processes absorb heat, cooling the surroundings, exemplified by ice melting or the sun warming a lake. The video provides real-life examples and encourages viewers to identify these processes in various scenarios.

What happens in an exothermic process?

• Temperature remains constant

• Energy is only transformed into light

• Heat is absorbed by the system

• Heat is released from the system

What is an example of an exothermic process?

• Ice melting

• Sun warming up water

• Photosynthesis

• Lighting a match

What characterizes an endothermic process?

• The system's temperature decreases

• The system absorbs heat

• Energy is only converted into mechanical work

• Heat is expelled from the system

Which process is an example of endothermic reaction?

• A hot pack activating

• A match burning

• Ice absorbing heat and melting

• Combustion engine running

What is the role of the Sun in warming up Lake Superior?

• It cools down the lake

• It provides mechanical energy

• It transfers heat to the lake

• It absorbs heat from the lake

What happens to iced tea in the hot sun?

• It releases heat

• It cools down further

• It absorbs heat

• It undergoes a chemical reaction

Is photosynthesis an exothermic or endothermic process?

• Endothermic

• Both

• Neither

• Exothermic

What indicates a process is exothermic?

• The process requires light

• Heat is emitted

• Heat is absorbed

• The system gets colder

What does a hot pack demonstrate?

• An endothermic reaction

• Photosynthesis

• A neutral thermal process

• An exothermic reaction

Why is a baking soda volcano considered endothermic?

• It gets colder by absorbing heat

• It emits light

• It remains at a constant temperature

• It releases heat