Mixtures and Pure Substances
A Grade 4 science worksheet introducing mixtures, pure substances, and ways to separate mixtures.
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Mixtures and Pure Substances
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Read each question carefully and answer to the best of your ability.
1. Which of the following is an example of a pure substance?
Salad
Saltwater
Sugar
Trail mix
2. What is a mixture?
A substance that cannot be broken down
Two or more substances chemically combined
Two or more substances physically combined
A substance with only one type of particle
1. A pure substance can be separated into simpler substances by physical means.
True
False
2. Salt dissolved in water is an example of a mixture.
True
False
1. A is made of only one type of particle.
2. You can separate a mixture of sand and iron filings using a .
1. Describe one way you could separate a mixture of beans and rice.
Use the words below to complete the sentences.
1. Lemonade is an example of a .
2. Water is a .