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Science Unit 5- 4th grade

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    Matter
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  • Anything that takes up space and has mass.
    Matter
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  • The amount of matter in an object is its __________.
    Mass
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  • Amount of matter present in a certain volume of a substance
    Density
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  • The idea that you cannot make or destroy matter is called _______.
    law of conservation of mass
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  • They process of a liquid changing into a gas
    evaporation
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  • The process of a gas changing into a liquid
    condensation
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  • What is an example of a temporary magnet?
    an electromagnet or a nail that has been magnetized
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  • What happens when you rub a magnet on a nail 30 times, then move the nail close to another nail?
    The first nail has become magnetized and now it will attract (move towards) the 2nd nail.
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  • Space taken up by an object is its ___________.
    volume
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  • When the south and north end of two magnets get close to each other, what happens?
    the magnets will be pulled together
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  • When the south end of a magnet gets close to the south end of another magnet, what happens?
    The magnets will repel each other (move apart).
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  • What are 3 properties used to classify matter?
    Possible answers: color, hardness, shape, size, taste, texture, odor
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  • What is a word that could be used to describe the texture of a substance?
    Texture is how something feels. Possible answers smooth, rough, gritty, bumpy, sticky
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  • Why does water disappear off of a hot sidewalk?
    It evaporates, it changes into a gas called water vapor
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  • How are the particles in a solid arranged?
    Particles in a solid are tightly packed together. They keep their shape even when moved.
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  • How are the particles in a liquid arranged?
    They are loosely packed together. A liquid will change shape if moved to a different container.
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