Other questions in this quiz

2. Which of these is incorrect?

  • Water is a compound and not an element
  • Sb is antimony
  • A human is pure and not a mixture
  • Sea water is a mixture

3. What is a mixture?

  • At least 2 different atoms
  • An atom attached to another atom
  • 2 or more different substances not chemically combined
  • Where all the substances are the same

4. What does it mean if a substance is pure?

  • 2 or more of the same substances not chemically combined
  • All the substances are the same
  • Lots of the same atoms not combined
  • The substance looks the same throughout

5. What is a molecule?

  • Two atoms not combined
  • A mixture of atoms and other molecules
  • Two or more atoms chemically joined
  • A dot of something

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