Understanding Mixtures
A Grade 7 science worksheet exploring the concepts of mixtures, solutions, suspensions, and colloids with various question types.
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Understanding Mixtures
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Read each question carefully and answer to the best of your ability.
1. Which of the following best describes a mixture?
A substance made of only one type of atom.
Two or more substances chemically combined.
Two or more substances physically combined.
A pure substance with a fixed composition.
2. Which type of mixture has components that are evenly distributed and look uniform throughout?
Heterogeneous mixture
Homogeneous mixture
Suspension
Colloid
3. A is a type of homogeneous mixture where one substance dissolves completely into another.
4. In a suspension, particles are large enough to eventually out.
5. Fog is an example of a because it contains tiny water droplets dispersed in air.
6. All mixtures are solutions.
True
False
7. Give an example of a heterogeneous mixture and explain why it is classified as such.
Match each term with its correct description.
8. Solution
a. Particles settle over time
9. Suspension
b. Components are uniformly mixed
10. Colloid
c. Particles are dispersed but don't settle
Observe the image below, which shows an example of a mixture.
11. Based on the image, would you classify this as a homogeneous or heterogeneous mixture? Explain your reasoning.