Bài viết tiếng anh States of matter 2

States of States of
MatterMatter
Lessons 5 – 6Lessons 5 – 6
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States of
Matter
Lessons 5–6
Mixing Matter . . . . . . . . . . .2

Freezing . . . . . . . . . . . . . . . .4
Melting. . . . . . . . . . . . . . . . .5
Heating Water . . . . . . . . . . .6
Burning . . . . . . . . . . . . . . . .8
Cooking . . . . . . . . . . . . . . .10
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2
You can mix matter.
Mixing
Matter
Lemonade is a
mixture of water,
juice, and sugar.
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3
You can take a mixture apart.
The parts stay the same.
The fruit in this salad
does not change size
or shape.
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4
Freezing
Water can get so cold it freezes.
Frozen water is ice, a solid.
juice, a liquid
juice pop, a solid
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5
Warm air can melt ice.

Melted ice is water, a liquid.
Melting
liquid
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6
Water changes when it is heated.
It changes to a gas.
Heating
Water
boiling water
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7
The gas is called steam.
Steam cools and
forms drops of water.
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8
Burning
Fire changes matter into new matter.
The new matter can not change back.
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9
Fire can burn wood.
It changes wood to ashes and smoke.
The ashes and smoke can not
change back into wood.
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10
Cooking changes matter.
The new matter can not change back.

Cooking
The toast can not
change back to the
way it was before.
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11
Eggs change when they are cooked.
They can not change back.
cooked eggs
uncooked
eggs
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12
Vocabulary
matter, p. 2
mix, p. 2
mixture, p. 2
freeze, p. 4
solid, p. 4
melt, p. 5
heat, p. 6
gas, p. 6
burn, p. 9
cook, p. 10
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School-Home Connection
Tell a family member what you
have learned about the ways matter
changes. Take turns naming examples
of changes you have seen.

Hands-On Activity
1. Put a drop of water on a paper
towel.
2. Observe to find out how long it
takes for the water to evaporate.
Think About the Reading
1. What questions do you have after
reading this book?
2. How can you find answers to your
questions?
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