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Nature of Matter: Elements, Compounds, and Mixtures

Checkpoint: molecules and mixtures

Three questions on molecules and mixtures. Feedback comes as you answer, and you can retry any time.

A flask holds 4 water molecules. How many hydrogen atoms are in it?

Sugar is stirred into water. What state is each part in alone?

How many kinds of atom are in one hydrogen molecule?

0 of 3 answered

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This track

  1. 0 Start here
  2. 1 What pure means here
  3. 2 Substances that will not come apart
  4. 3 An agreed short name
  5. 4 Joined in a fixed ratio
  6. 5 Together, but not joined
  7. 6 Trying to get the parts back
  8. 7 Sorting everyday things into piles
  9. 8 Atoms joined as one particle
  10. 9 Which states are mixed?
  11. 10 Checkpoint: molecules and mixtures
  12. 11 Between a metal and a non-metal
  13. 12 Minerals from the ground
  14. 13 Same acid, different gas
  15. 14 What counts as matter?
  16. 15 Checkpoint: metalloids, minerals, the acid test and matter
  17. 16 The big picture
  18. 17 Track quiz

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