Properties of materials
Grade 5: hardness and strength, solubility, transparency, electrical and thermal conductivity, magnetic or not.
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Questions
Which material is the hardest?
- Chalk
- Diamond
- Rubber
- Wood
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DiamondWhich word describes a material that is hard to bend or break?
- Flexible
- Runny
- Soft
- Strong
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StrongA material that is easy to scratch is soft. (True or false?)
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TrueWhich material would be the best choice for a strong bridge?
- Clay
- Cotton wool
- Paper
- Steel
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SteelWhich material dissolves in water?
- Pebbles
- Plastic
- Sand
- Sugar
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SugarSalt is stirred into water and seems to disappear. What is the mixture called?
- A solute
- A solution
- A solvent
- A suspension
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A solutionWhat do we call a material that lets all light through, so you can see clearly?
- Flexible
- Opaque
- Translucent
- Transparent
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TransparentWhich material is opaque?
- Clean air
- Clear glass
- Clear plastic wrap
- Wood
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WoodWhich material is a good electrical conductor?
- Copper
- Plastic
- Rubber
- Wood
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CopperPlastic is a good material to cover electric wires because it is an insulator. (True or false?)
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TrueWhy do pans often have plastic or wooden handles?
- They are magnetic
- They conduct heat very well
- They dissolve in water
- They do not conduct heat well
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They do not conduct heat wellWhich of these objects would a magnet pick up?
- A copper wire
- A glass marble
- A wooden spoon
- An iron nail
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An iron nailAll metals are magnetic. (True or false?)
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FalseName one material that is transparent. (Answer out loud)
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Glass (or clear plastic, water)Sand is stirred into water but does not disappear. What science word describes sand? (Answer out loud)
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InsolubleName one metal that a magnet attracts. (Answer out loud)
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Iron (or steel; also nickel, cobalt)