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Pure vs. Impure: Test Your Knowledge on Substances and Mixtures!
By Science Resources
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Last updated about 2 hours ago
13 questions
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Question 1
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Question 2
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Question 3
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Question 4
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Can you name one example of an impure substance?
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Question 9
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Question 11
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Question 12
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Question 13
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What is a pure substance?
A mixture of different elements
A material made up of only one type of particle
A solution with varying concentrations
None of the above
An impure substance can be easily separated into its components.
True
False
Which of the following are examples of pure substances? (Select all that apply)
Distilled water
Table salt
Air
Gold
Which of the following statements is true?
Every pure substance has a uniform composition.
An impure substance has the same properties throughout.
Pure substances can be easily mixed together without changing their properties.
None of the above
Which of the following is a compound?
Sodium (Na)
Water (H2O)
Oxygen (O2)
Air (a mixture)
What best describes a mixture?
Combination of two or more substances chemically joined together.
Combination of two or more substances not chemically joined together.
Single pure substance
Which of these is not an element?
Iron (Fe)
Helium (He)
Carbon dioxide (CO2)
Gold (Au)
Which is an example of an element?
Copper (Cu)
Salt (NaCl)
Sugar (C12H22O11)
Carbon dioxide (CO2)
An element cannot be broken down into simpler substances by chemical means.
True
False
A compound is made up of two or more elements that are chemically bonded together.
True
False
All mixtures are uniform and cannot be separated by physical means.
True
False
Pure substances include both elements and compounds but not mixtures.
True
False