
Understanding Changes in Matter

Quiz
•
Science
•
7th Grade
•
Hard
Standards-aligned
Used 1+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A student observes a piece of metal rusting over time. Which of the following best describes this process?
Physical change
Chemical change
Both physical and chemical change
Neither physical nor chemical change
Tags
TEKS.SCI.7.6C
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following scenarios best illustrates a physical change?
Burning a piece of paper
Dissolving sugar in water
Baking a cake
Rusting of iron
Tags
TEKS.SCI.7.6C
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A solution is made by dissolving 10 grams of salt in 100 mL of water. If the solution is diluted by adding 100 mL of water, what is the new concentration of the solution?
5 grams per 100 mL
10 grams per 200 mL
10 grams per 100 mL
20 grams per 200 mL
Tags
TEKS.SCI.7.6D
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If you have a solution with a high concentration of solute, which of the following actions will decrease the concentration?
Adding more solute
Adding more solvent
Heating the solution
Stirring the solution
Tags
TEKS.SCI.7.6D
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A student is investigating how temperature affects the rate of dissolution of sugar in water. Which of the following is a reasonable hypothesis for this investigation?
Increasing the temperature will decrease the rate of dissolution.
Increasing the temperature will increase the rate of dissolution.
Temperature has no effect on the rate of dissolution.
The rate of dissolution is highest at room temperature.
Tags
TEKS.SCI.7.6E
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following methods would most effectively increase the rate at which a solid solute dissolves in a liquid solvent?
Decreasing the surface area of the solute
Decreasing the temperature of the solvent
Stirring the solution
Allowing the solution to sit undisturbed
Tags
TEKS.SCI.7.6E
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A student is tasked with distinguishing between a physical and a chemical change. Which of the following observations would indicate a chemical change?
A change in shape
A change in color
A change in state
A change in size
Tags
TEKS.SCI.7.6C
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