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Energetics Ch5

Authored by Monica Arioko

Chemistry

11th - 12th Grade

Used 34+ times

Energetics Ch5
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20 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

The energy level diagram for the reaction between magnesium and hydrochloric acid is shown.

Energy is given out during the reaction

The products are at a lower energy level than the reactants

The reaction is endothermic.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which reaction is endothermic?

acid neutralising alkali causing a temperature increase

adding magnesium to hydrochloric acid

calcium carbonate decomposing when heated combustion of fossil fuels

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Some white anhydrous copper(II) sulfate powder is put into a beaker of water and stirred. What would show that the process was exothermic?

A blue solution is formed

The beaker feels cooler

The beaker feels warmer

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Exothermic reactions are ones that.....

Release energy to the surroundings

Absorb energy from the surroundings

Remain at a constant temperature

Decrease in temperature

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Neutralisation reactions always....

stay the same temperature

decrease in temperature

increase in temperature

Increase at first and then decrease at the end

6.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

Adding energy to get a reaction started is.....

Activation energy

Catalytic

never needed

needed for breaking bonds

7.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

Combustion reactions are ......

always resulting in an increase in temperature

never decrease in temperature

always result in a zero enthalpy change

never have temperature increases

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