Practice Summary (6) - Elements, Compounds and Mixtures

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9 questions

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3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is an element?
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Think of examples like oxygen and gold.
Question 2.
List two methods to separate mixtures.
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What would you use to separate sand from water?
3Question 3.
Which of the following is a characteristic of elements?
- A. They can be broken down chemically.
- B. They are made of one type of atom.
- C. They form mixtures.
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What defines an element fundamentally?
4Question 4.
True or False: A mixture forms a new substance.
- True
- False
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Consider what happens when you mix oil and water.
Question 5.
If you have a mixture of sand, salt, and iron filings, describe the steps you would take to separate them completely. Include the rationale for each step.
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Think about the properties of each material you're separating.
Question 6.
Explain how the formation of a compound changes the properties of its constituent elements with an example.
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Consider how bonds create new characteristics.

5 more questions in this section. Enroll free to practise them all.