Compounds and Mixtures
Explore the basic concepts of compounds and mixtures, distinguishing between them and identifying common examples in everyday life.
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Compounds and Mixtures
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Read each question carefully and answer to the best of your ability. This worksheet will test your knowledge of compounds and mixtures.
1. Which of the following is a substance formed when two or more elements are chemically combined?
Mixture
Compound
Element
Solution
2. Which of the following can be easily separated by physical means?
Water (H₂O)
Salt (NaCl)
Sand and water
Carbon dioxide (CO₂)
3. Which term describes a mixture where the components are evenly distributed and look the same throughout?
Heterogeneous mixture
Homogeneous mixture
Compound
Element
1. A is made of two or more substances that are physically combined but not chemically bonded.
2. When a compound is formed, the original substances lose their properties.
3. Saltwater is an example of a mixture because the salt is dissolved evenly in the water.
1. All mixtures can be separated by physical methods.
True
False
2. A compound can be broken down into simpler substances by chemical reactions.
True
False
Match each definition on the left with the correct term on the right.
1. A substance with a fixed composition.
a. Mixture
2. Two or more substances physically combined.
b. Compound
3. Components retain their original properties.
c. Pure Substance
1. Explain the difference between a compound and a mixture. Give an example of each.
Use the words below to complete the sentences.
1. A salad is an example of a mixture because you can see the different parts.
2. Sugar dissolving in water creates a mixture.
3. To separate a compound, you usually need a change.
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