Changes in Matter

Grade 3 Science Worksheet - Challenge Me

Circle the answer.

1. 1.

   Snow melts into water, and the water freezes again at night. Paper burns into ash. How are these changes different?

   • burning can be undone; the water change cannot
   • both changes can be undone
   • the water change can be undone; burning cannot
   • neither change can be undone
2. 2.

   Two puddles are the same size. One is in the sun and one is in the shade. Which dries first, and why?

   • the sunny one, because heat speeds up evaporation
   • the shady one, because shade pulls water away
   • both, because they are the same size
   • the sunny one, because sunlight freezes water
3. 3.

   A weather report says: night 25°F, day 45°F. What will happen to a puddle over one night and day?

   • it will stay liquid the whole time
   • it will melt at night and freeze during the day
   • it will freeze at night and melt during the day
   • it will stay frozen the whole time
4. 4.

   Which test shows whether a change can be undone?

   • look at the material once after the change
   • weigh the material before the change only
   • write down the name of the material
   • try to change the material back and see if it returns
5. 5.

   Lightning burns part of a tree black. Can rain make the burned wood like new again?

   • yes, once the wood cools down
   • yes, water reverses burning
   • yes, after it freezes in winter
   • no, burning cannot be undone
6. 6.

   Why does a wet road become icy after the sun sets in winter?

   • the water turns into water vapor
   • the road soaks up all the water
   • the sun's heat makes ice form
   • the air cools below 32°F and the water freezes
7. 7.

   A glass of ice water gets drops on the outside on a humid day, but not on a very dry day. Why?

   • the glass leaks more when it is humid
   • dry air has more water vapor
   • ice melts slower on humid days
   • humid air has more water vapor to condense
8. 8.

   Which list puts the water changes that make rain in order?

   • evaporation → condensation → rain
   • rain → freezing → evaporation
   • condensation → evaporation → rain
   • melting → evaporation → freezing
9. 9.

   Ice is heated until it becomes water, then water vapor. What did adding heat do each time?

   • made the water disappear forever
   • made more water
   • changed the water to the next state
   • changed it back to ice
10. 10.

    Hail grows bigger as wind blows it up and down in a storm cloud. What happens each time it goes up high, where it is very cold?

    • it melts completely
    • it evaporates
    • it turns into rain
    • more water freezes onto it