Y10 Energy changes in reactions / profile diagrams

Last updated 10 months ago

27 questions

Types of reactions and energy changes

1

Endothermic and exothermic reactions

1

Reaction progress diagrams

1

4

1

Identify the type of change for the following reaction: NaCl(s) + H₂O(l) → NaCl(aq)

a) salts dissolving in water

b) neutralisation reactions

c) displacement reactions

d) precipitation reactions

Identify the type of change for the following reaction: NaOH + HCl → NaCl + H₂O

a) salts dissolving in water

b) neutralisation reactions

c) displacement reactions

d) precipitation reactions

Identify the type of change for each of the following reaction:

Cl₂ + 2NaBr → 2NaCl + Br₂

Salts dissolving in water

Neutralisation reactions

Displacement reactions

Precipitation reactions

Identify the type of change for each of the following reaction:

Fe + CuSO₄ → FeSO₄ + Cu

Salts dissolving in water

Neutralisation reactions

Displacement reactions

Precipitation reactions

Identify the type of change for each of the following reaction:

AgNO₃(aq) NaCl(aq) → NaNO₃(aq) + AgCl(s)

Salts dissolving in water

Neutralisation reactions

Displacement reactions

Precipitation reactions

In an exothermic reaction, heat energy is:

Given out

Taken in

Unchanged

In an endothermic reaction, heat energy is:

Given out

Taken in

Unchanged

Bond breaking is:

Endothermic

Exothermic

Bond forming is:

a. endothermic

b. exothermic

In an exothermic reaction:

a. Bond breaking energy > bond making energy

b. Bond breaking energy < bond making energy

In an endothermic reaction:

a. Bond breaking energy > bond making energy

b. Bond breaking energy < bond making energy

What is the minimum energy needed to break the bonds in the reactants called? Answer: _______  energy (10 letters) (1 Point)

This is a reaction profile diagram for an _______________  reaction.
Methane is oxidised to from methanol.

This is a _______________ reaction.
The surroundings will get ___________ as the temperature ______________ 

Which letter represents the activation energy during respiration?

A

B

C

Which letter represents the overall energy change? (1 Point)

a

b

c

Which letter represents the energy change for breaking bonds? (1 Point)

a

b

c

Which letter represents the energy change for making bonds?
Note if you were asked to draw an arrow for the energy released when bonds were made in the products the arrow should point downwards

a

b

c

This energy change is _______  (1 Point). (endothermic of exothermic)?

In this change, the surroundings would get: (1 Point)

Hotter

Cooler

In this change, the temperature of the surroundings would:

Increase

Decrease

The reaction profile shows an ______________ reaction.

Which letter represents the activation energy?

A

B

C

D

Which letter represents the energy needed to break the bonds in the reactants? A, B, or C? (1 Point)

A

B

C

Which letter represents the energy needed to form the bonds in the products? (1 Point)
Note this arrow should be pointing downwards

A

B

C

Which letter represents the energy change for the reaction? (1 Point)

a

b

c

The temperature of the surroundings will:

a) Increase

b) Decrease

c) Remain the same

Which statement is correct?

Energy taken in to break bonds in the reactants is greater than the energy released when new bonds form in the products.

Energy taken in to break bonds in the reactants is less than the energy released when new bonds form in the products.

Identify the type of change for the following reaction: NaCl(s) + H₂O(l) → NaCl(aq)

a) salts dissolving in water

b) neutralisation reactions

c) displacement reactions

d) precipitation reactions

Identify the type of change for the following reaction: NaOH + HCl → NaCl + H₂O

a) salts dissolving in water

b) neutralisation reactions

c) displacement reactions

d) precipitation reactions

Identify the type of change for each of the following reaction:

Cl₂ + 2NaBr → 2NaCl + Br₂

Salts dissolving in water

Neutralisation reactions

Displacement reactions

Precipitation reactions

Identify the type of change for each of the following reaction:

Fe + CuSO₄ → FeSO₄ + Cu

Salts dissolving in water

Neutralisation reactions

Displacement reactions

Precipitation reactions

Identify the type of change for each of the following reaction:

AgNO₃(aq) NaCl(aq) → NaNO₃(aq) + AgCl(s)

Salts dissolving in water

Neutralisation reactions

Displacement reactions

Precipitation reactions

In an exothermic reaction, heat energy is:

Given out

Taken in

Unchanged

In an endothermic reaction, heat energy is:

Given out

Taken in

Unchanged

Bond breaking is:

Endothermic

Exothermic

Bond forming is:

a. endothermic

b. exothermic

In an exothermic reaction:

a. Bond breaking energy > bond making energy

b. Bond breaking energy < bond making energy

In an endothermic reaction:

a. Bond breaking energy > bond making energy

b. Bond breaking energy < bond making energy

This is a reaction profile diagram for an _______________  reaction.
Methane is oxidised to from methanol.

This is a _______________ reaction.
The surroundings will get ___________ as the temperature ______________ 

Which letter represents the activation energy during respiration?

A

B

C

Which letter represents the overall energy change? (1 Point)

a

b

c

Which letter represents the energy change for breaking bonds? (1 Point)

a

b

c

Which letter represents the energy change for making bonds?
Note if you were asked to draw an arrow for the energy released when bonds were made in the products the arrow should point downwards

a

b

c

In this change, the surroundings would get: (1 Point)

Hotter

Cooler

In this change, the temperature of the surroundings would:

Increase

Decrease

Which letter represents the activation energy?

A

B

C

D

Which letter represents the energy needed to break the bonds in the reactants? A, B, or C? (1 Point)

A

B

C

Which letter represents the energy needed to form the bonds in the products? (1 Point)
Note this arrow should be pointing downwards

A

B

C

Which letter represents the energy change for the reaction? (1 Point)

a

b

c

The temperature of the surroundings will:

a) Increase

b) Decrease

c) Remain the same

Which statement is correct?

Energy taken in to break bonds in the reactants is greater than the energy released when new bonds form in the products.

Energy taken in to break bonds in the reactants is less than the energy released when new bonds form in the products.

Y10 Energy changes in reactions / profile diagrams

Y10 Energy changes in reactions / profile diagrams

The reaction profile shows an ______________ reaction.

Identify the type of change for the following reaction: NaCl(s) + H₂O(l) → NaCl(aq)

Identify the type of change for the following reaction: NaOH + HCl → NaCl + H₂O

Identify the type of change for each of the following reaction:Cl₂ + 2NaBr → 2NaCl + Br₂

Identify the type of change for each of the following reaction:Fe + CuSO₄ → FeSO₄ + Cu

Identify the type of change for each of the following reaction:AgNO₃(aq) NaCl(aq) → NaNO₃(aq) + AgCl(s)

In an exothermic reaction, heat energy is:

In an endothermic reaction, heat energy is:

Bond breaking is:

Bond forming is:

a. endothermic

b. exothermic

In an exothermic reaction:

a. Bond breaking energy > bond making energy

b. Bond breaking energy < bond making energy

In an endothermic reaction:

a. Bond breaking energy > bond making energy

b. Bond breaking energy < bond making energy

Which letter represents the activation energy during respiration?

Which letter represents the overall energy change? (1 Point)

Which letter represents the energy change for breaking bonds? (1 Point)

Which letter represents the energy change for making bonds?Note if you were asked to draw an arrow for the energy released when bonds were made in the products the arrow should point downwards

In this change, the surroundings would get: (1 Point)

In this change, the temperature of the surroundings would:

The reaction profile shows an ______________ reaction.

Which letter represents the activation energy?

Which letter represents the energy needed to break the bonds in the reactants? A, B, or C? (1 Point)

Which letter represents the energy needed to form the bonds in the products? (1 Point)Note this arrow should be pointing downwards

Which letter represents the energy change for the reaction? (1 Point)

The temperature of the surroundings will:

Which statement is correct?

a. endothermic

b. exothermic

a. Bond breaking energy > bond making energy

b. Bond breaking energy < bond making energy

a. Bond breaking energy > bond making energy

b. Bond breaking energy < bond making energy

Identify the type of change for each of the following reaction:

Cl₂ + 2NaBr → 2NaCl + Br₂

Identify the type of change for each of the following reaction:

Fe + CuSO₄ → FeSO₄ + Cu

Identify the type of change for each of the following reaction:

AgNO₃(aq) NaCl(aq) → NaNO₃(aq) + AgCl(s)

Which letter represents the energy change for making bonds?
Note if you were asked to draw an arrow for the energy released when bonds were made in the products the arrow should point downwards

Which letter represents the energy needed to form the bonds in the products? (1 Point)
Note this arrow should be pointing downwards