Which statement best describes the difference between endothermic and exothermic reactions?
The correct answer would be “They are opposites because endothermic reactions require energy and exothermic reactions release energy”.
What is the difference between an exothermic and endothermic reaction quizlet?
Terms in this set (10) A chemical reaction that releases energy, usually in the form of heat. What’s the main difference between an exothermic and endothermic reaction? An exothermic reaction releases energy and feels warm while an endothermic reaction absorbs energy and feels cool.
Is ice cream melting exothermic or endothermic?
Ice must absorb energy in order to melt (melting is an endothermic process*), so heat is transferred from the environment (which includes your ice cream mixture!) to the ice, making the ice cream mixture colder.
Is striking a match endothermic?
(A) Endothermic because energy is given out as the match burns. Hint: when Energy is released along with a product, such reactions are called exothermic reactions and striking match leads to friction generating more energy than that can be taken by particles resulting in flame.
Is freezing endothermic or exothermic?
When water becomes a solid, it releases heat, warming up its surroundings. This makes freezing an exothermic reaction.
Why is freezing exothermic?
When the water is placed in a freezer, the water slowly loses heat to the surrounding cold air. The water molecules on losing energy begin to move slowly, come closer and pack close enough to change to ice. In this process, the water releases heat to the surroundings, so it is an exothermic process.
Why is it important to know if a reaction is exothermic or endothermic?
Exothermic reactions are important to forensic sciences and particularly to fire and explosion investigation. When a chemical reaction requires heat (rather than producing it) and results in cooling down the surroundings, it is conversely called endothermic.
Which of the following is an exothermic reaction?
Solution : When quick lime reacts with water, a large amount of heat is released along with the formation of calcium hydroxide. Similarly, the process of dissolving an acid or base in water is a highly exothermic reaction. Evaporation of water and sublimation of camphor are endothermic reactions.
Are humans endothermic?
1 Ectothermic and Endothermic Metabolism. Humans are endothermic organisms. This means that in contrast to the ectothermic (poikilothermic) animals such as fishes and reptiles, humans are less dependent on the external environmental temperature [6,7].