Practice Is Matter Around Us Pure? (2) - Is Matter Around Us Pure?

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10 questions

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3 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
4 questions · about 3 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is a pure substance?
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Think of substances that cannot be separated into different types.
Question 2.
Can milk be classified as a pure substance?
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Recall what components are found in milk.
3Question 3.
What is a pure substance?
- A material with mixed components
- A material with uniform composition
- A chemical reaction
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Focus on what defines a pure substance.
4Question 4.
True or False: Mixtures can be physically separated.
- True
- False
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Consider whether components maintain individual properties.
Question 5.
A chemist has three beakers: one with distilled water, one with saltwater, and one with a mixture of sand and salt. Describe how they would separate each component from the mixtures.
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Remember what methods are used for separation.
Question 6.
Explain the importance of distinguishing between mixtures and pure substances in scientific research.
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Consider how the properties of substances affect experimental results.

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