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# Matter (states of) 2nd grade (teach)

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Lower elementary introduction to matter and the three states of matter.

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### Matter (states of) 2nd grade (teach)

1. 1. Matter (At about the 2nd grade level)What is matter?By Moira Whitehouse, PhD
2. 2. Matter includes everythingaround us--• our couch, our bed, ourcomputer• our food and our drinks• our family and our dog orcat
3. 3. • the grass and the trees• the Sun and the Moon• all the planets• everything in our Universe
4. 4. Yes!EverythingEverythingEverything
5. 5. Matter on Earth is usually inone of three states.
6. 6. solids
7. 7. We know when matter is a solidbecause solids:• Keep their shape unless they are broken• Do not flow or pour
8. 8. liquids
9. 9. We can tell when matter is a liquid because liquids:• Do not keep their own shape; they take theshape of the container they are in.
10. 10. And...liquids flow or pour. Oil being poured on a salad
11. 11. Then what about sand,sugar and salt? Don’tthey pour, flow andtake the shape of thecontainer they are in?
12. 12. If you magnifysand or sugar,you can seethat they arenot liquids.Sand, salt, andsugar are madeup of very smallparticles thathave a definiteshape .
13. 13. Then there is that third state of matter: gasChild blowingair (a gas) intoa balloon.
14. 14. A balloon or a bubble are justcontainers that hold a gas. For usthat gas is usually air.
15. 15. There are other gases besides thegases in air. These balloonscontain a gas called helium whichis lighter than air.
16. 16. Air like all gasestakes the shape ofits container and expands to fill its container.
17. 17. Most gases including the gases inair are invisible—you simply cannotseem them. A jar of air
18. 18. However, you do know air is therewhen it moves things such as thiswindmill. Wind—moving air– causes this windmill to rotate.
19. 19. Or when you use the gas in yourlungs to blow out a candle.
20. 20. Can you name the three states ofmatter?Can you tell the differencebetween these three states? Bubbles hold an invisible gas called water vapor
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