Comprehension Check 5-3

In what three states does matter exists? Give an example of each.

  1. Solid: for example, rocks, or a table, a tree.
  2. Liquid: for example, oils, water from your tap, pudding.
  3. Gas: for example, the oxygen in the air, evaporated liquids.

Are ice, water, and steam different substances? Why or why not?

No: they are different states of matter. They are still the same substance (still have the same two hydrogen atoms and one oxygen atom).

Which state of matter...

  1. has no shape and does not fill up a fixed amount of space?
  2. has a definite shape and fills up a fixed amount of space?
  3. has no shape of its own but fills up a fixed amount of space?
  1. Gas
  2. Solid
  3. Liquid

List the states of matter according to the speeds of their molecules, from fastest to slowest.

  1. Gas
  2. Liquid
  3. Solid