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Properties of Materials
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Given an example of a non-biodegradable material.
Answer may vary.
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Which of these will float on water? honey, oil, or syrup?
oil
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TRUE or FALSE: Absorbent materials like paper bags can protect our things when it is raining.
FALSE
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What is this material that can hold water without absorbing it?
pail
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TRUE or FALSE: When a material decays, it usually changes in color and odor.
TRUE
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What property of a material refers to its ability to decay over time?
biodegradability
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Why do oil float on top of the water?
Its density is less than the density of water.
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How is this object useful to us?
It helps us float on water and keeps us from drowning.
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TRUE or FALSE: Bacteria can cause food to turn bad.
TRUE
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Give the three properties of materials that we discussed.
absorbency, buoyancy, and biodegradablity
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What is the property of towel that makes it useful to us?
absorbency
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What kind of materials sink on water?
Objects made of metal.
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What do you call the property of a material to float or sink on water?
buoyancy
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What do fruits, vegetables, and meat have in common?
They are all biodegradable.
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What object can be recycled into a flower vase?
plastic container or can
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TRUE or FALSE: Materials that decay easily can be recycled.
TRUE
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TRUE or FALSE: Diamonds float on water
FALSE
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TRUE or FALSE: Biodegradable materials take years to decay.
FALSE
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