Endothermic vs. Exothermic reactions

Front

What is an endothermic reaction?

Back

A reaction that absorbs energy from its surroundings, usually in the form of heat.

Front

What is an exothermic reaction?

Back

A reaction that releases energy to its surroundings, usually in the form of heat.

Front

How can you identify an exothermic reaction based on temperature change?

Back

If the temperature of the surroundings increases after the reaction, it is exothermic.

Front

How can you identify an endothermic reaction based on temperature change?

Back

If the temperature of the surroundings decreases after the reaction, it is endothermic.

Front

What is a chemical equation?

Back

A symbolic representation of a chemical reaction showing the reactants and products.

Front

What does the law of conservation of mass state?

Back

In a chemical reaction, mass is neither created nor destroyed; it is conserved.

Front

What is the role of reactants in a chemical reaction?

Back

Reactants are the starting materials that undergo a chemical change.

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What are products in a chemical reaction?

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Products are the new substances formed as a result of a chemical reaction.

Front

What is the significance of coefficients in a chemical equation?

Back

Coefficients indicate the number of molecules or moles of each substance involved in the reaction.

Front

What is the difference between a physical change and a chemical change?

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A physical change alters the form of a substance without changing its identity, while a chemical change results in the formation of new substances.