Exercise
Form 4: Everyday Examples of Endothermic Reactions
In this engaging exercise, Form 4 students will explore real-life examples of endothermic reactions, such as photosynthesis and the use of instant cold packs, by conducting simple experiments and discussing how these processes absorb heat from their surroundings. Discover the fascinating science behind everyday reactions and enhance your understanding of thermodynamics in action!
Questions
-
MultiChoice
Photosynthesis absorbs energy from sunlight to synthesize glucose. Photosynthesis is:
-
MultiChoice
An instant cold pack used for treating sports injuries is an example of an:
-
MultiChoice
Baking bread requires a continuous input of heat energy from an oven. Baking is:
-
MultiChoice
Thermal decomposition of limestone in a lime kiln requires constant heating. It is:
-
MultiChoice
Cooking an egg absorbs thermal energy to denature proteins. This process is:
-
MultiChoice
Evaporation of sweat from skin absorbs heat to cool the body. Evaporation is:
-
MultiChoice
Melting ice cubes by absorbing thermal energy from warm air is:
-
MultiChoice
Electrolysis of water uses electrical energy to split water into gases. It is:
-
MultiChoice
Dissolving ammonium chloride in water causes the temperature of water to drop. This process is:
-
MultiChoice
Which of the following processes absorbs heat energy from its surroundings?
-
MultiChoice
Plant cells store solar energy in chemical bonds during which endothermic process?
-
MultiChoice
Which type of process requires a continuous energy input to keep occurring?