Texture, shape, and color are physical properties used to identify objects. Ex: quarter is bigger than nickel
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Density: densities of substances do not change based on the amount of the substance. Ex: break it in half, if you have 100g or 200 g, all same density!!
Same substance = same density Ex: Wood has the same density despite its size. Two different substances can have the same density.
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Heating Properties: substances respond to heating in different ways. Compare rates at which substances conduct heat. Ex: Aluminum and Iron heat up quickly.
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Solubility: measure of how much a substance dissolves in given volume of liquid. Ex: sugar dissolves almost immediately. Dirt falls to bottom.
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Electric Properties: some substances conduct electricity better then others. Ex: Copper is a good conductor. Plastic is not.
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Magnetic Properties: some substances are attracted to magnets, others are not. Ex: Iron, cobalt, and nickel are magnetic. Copper, aluminum, and zinc are not magnetic.
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You can use the properties of substances to separate them. Ex: use a magnet to separate aluminum from steel. (THEY LOOK THE SAME, but one is magnetic!) Water-treatment plants separate mixtures to make water safe!
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