Is this a physical or chemical property: the ability to react with oxygen
chemical
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eraser
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gift
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banana
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15
A solution of two metals mixed perfectly together is called...
an alloy
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15
Name one way to measure volume.
Measure and multiply length x width x height OR use a graduated cylinder to measure by displacement
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lifesaver
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15
Is this matter or not matter: light
not matter
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15
What does the law of conservation of matter say? Explain what it means.
Matter cannot be created or destroyed. It can only change from one form to another.
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15
Is air matter? Explain your answer.
Yes - Air is matter because it takes up space and has mass.
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gold
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rocket
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15
A stick of butter weighs 500 g. What will happen to the mass of the butter when it melts?
The mass will stay the same.
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15
Which state of matter has a changing shape but a definite volume?
liquid
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15
Mineral water is water that has different minerals dissolved in it. When a glass of mineral water is left out for a few days, crystals start to form on the glass. How many new substances are formed?
None - the crystals are the solid minerals separating from the liquid.
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15
True or false: the particles in a solid don't move
False - they vibrate slowly in place
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15
Sally weighs baking soda and vinegar and finds that it ways 50 g. She mixes them together and weights them again and finds that they now weigh 30 grams. Explain what happened.
The total amount of matter is still 50 g (due to the law of conservation of matter), but some of the gas escaped so it was not measured the second time.
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15
Which state of matter has a changing shape and a changing volume?