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Science Grade 7 Unit 2: Controlling Energy

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Last updated over 2 years ago
7 questions
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1
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3
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I can...
  • distinguish between solute, solvent and solution
  • identify that energy is released in bond breaking
  • identify that energy is absorbed in bond making
Question 1
1.

Draggable itemarrow_right_altCorresponding Item
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Question 2
2.

Question 3
3.
You are making a cup of chocolate milk for yourself, and you need the two ingredients below. Identify the solvent, solute and solution. Drag the correct answer to the box.
Other Answer Choices:
Solute
Solvent
Solution
Question 4
4.

Question 5
5.
In an exothermic reaction, the amount of energy released when new bonds form is _______ (greater/less) than the amount of energy absorbed if bonds are broken.
Question 6
6.

Question 7
7.
Bond breaking involves energy _______ (absorbed or released) and bond making involves energy _______ (absorbed or released).
Match the words to the correct definition.
Solvent
a substance that is dissolved by another substance
Solution
a substance that dissolves another substance
Solute
a homogeneous mixture made of a solute dissolved within a solvent
Which sentence is true for solutes? You may choose more than one option.
Solutes can be liquids.
Solutes can be solids.
Solutes can be gases.
You are making lemonade for your classmates. The ingredients are shown in the picture below. Which is / are the solute? You may choose more than one option.

Sugar
Lemon Juice
Water
Which of the following statements is true about bond breaking?
Energy is released during bond breaking.
No change in energy.
It takes energy to break bonds.