Unit 3: Energy Flow Test 1 Review

Front

What is an exothermic reaction?

Back

An exothermic reaction is a chemical reaction that releases more energy than it absorbs.

Front

What role does a catalyst play in a chemical reaction?

Back

A catalyst decreases the activation energy needed for a chemical reaction, allowing it to proceed more quickly.

Front

What is a catalyst?

Back

A catalyst is a substance that speeds up a chemical reaction without being consumed in the process.

Front

What is an endothermic reaction?

Back

An endothermic reaction is a chemical reaction that absorbs energy from its surroundings.

Front

What is an exothermic reaction in terms of energy flow?

Back

An exothermic reaction releases energy, typically in the form of heat, to the surroundings.

Front

What is activation energy?

Back

Activation energy is the minimum amount of energy required to initiate a chemical reaction.

Front

How does temperature affect the rate of a chemical reaction?

Back

Increasing the temperature generally increases the rate of a chemical reaction by providing more energy to the reactants.

Front

What is the difference between reactants and products?

Back

Reactants are the starting substances in a chemical reaction, while products are the substances formed as a result of the reaction.

Front

What is the equation for photosynthesis?

Back

The equation for photosynthesis is @@6 ext{CO}_2 + 6 ext{H}_2 ext{O} + ext{Energy} ightarrow ext{C}_6 ext{H}_{12} ext{O}_6 + 6 ext{O}_2@@.

Front

What is the equation for the combustion of hydrogen?

Back

The equation for the combustion of hydrogen is @@ ext{O}_2(g) + 2 ext{H}_2(g) ightarrow 2 ext{H}_2 ext{O}(g) + ext{Energy}@@.