1. Differentiate an exothermic reaction from an endothermic reaction
2. Differentiate renewable from non-renewable sources of energy
3. Why it is important to understand product labels
2. Differentiate renewable from non-renewable sources of energy
3. Why it is important to understand product labels
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1.) Summary. Chemical reactions are of two kinds: Exothermic and endothermic reactions. In exothermic reactions, energy is released while in endothermic reactions, energy is absorbed.
2.) Nonrenewable energy resources, like coal, nuclear, oil, and natural gas, are available in limited supplies. This is usually due to the long time it takes for them to be replenished. Renewable resources are replenished naturally and over relatively short periods of time
3.) Food labels are a legal requirement and they are important for many reasons. They help consumers make informed choices about the food they buy, help them to store and use it safely and allows people to plan when they will consume it – all of which help to reduce food wastage.
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Answer:
1. In exothermic reactions, energy is released while in endothermic reactions, energy is absorbed.
2. Nonrenewable energy resources, like coal, nuclear, oil, and natural gas, are available in limited supplies. This is usually due to the long time it takes for them to be replenished. Renewable resources are replenished naturally and over relatively short periods of time.
3. Food labels are a legal requirement and they are important for many reasons. They help consumers make informed choices about the food they buy, help them to store and use it safely and allows people to plan when they will consume it – all of which help to reduce food wastage.
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