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Y10 Energy changes in reactions / profile diagrams

Last updated 5 months ago
27 questions
Types of reactions and energy changes
1

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

1

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

1

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

Cl₂ + 2NaBr → 2NaCl + Br₂

1

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

Fe + CuSO₄ → FeSO₄ + Cu

1

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

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

Endothermic and exothermic reactions
1

In an exothermic reaction, heat energy is:

1

In an endothermic reaction, heat energy is:

1

Bond breaking is:

1

Bond forming is:

1

In an exothermic reaction:

1

In an endothermic reaction:

Reaction progress diagrams
1
What is the minimum energy needed to break the bonds in the reactants called? Answer: _______ energy (10 letters) (1 Point)
4
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 ______________
Other Answer Choices:
increases
combustion
displacement
neutralisation
exothermic
hotter
precipitation
colder
endothermic
decreases
1

Which letter represents the activation energy during respiration?

1

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

1

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

1

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

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

1

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

1

In this change, the temperature of the surroundings would:

1

The reaction profile shows an ______________ reaction.

1

Which letter represents the activation energy?


1

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

1

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

1

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

1

The temperature of the surroundings will:

1

Which statement is correct?