# Density

## Quiz by Rex Williams

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8 questions
• Q1
You measure out 100mL of a clear liquid and find that it has a mass of 125g. What is the density?
0.8g/mL
1.25
0.8
1.25g/mL
30s
• Q2
Which has more mass: 100g of gold or 100g of styrofoam?
Gold has more mass
They have the same mass
Styrofoam has more mass
Neither have mass
30s
• Q3
Which has more density: 100g of gold or 100g of styrofoam?
They have the same density
Neither have density
Styrofoam is more dense
Gold is more dense
30s
• Q4
An object has a density of 1.1g/mL. Will it float or sink?
It will sink. Its density is lower than water.
It will float. Its density is higher than water.
Unknown. It depends on the mass of the object.
It will sink. Its density is higher than water
30s
• Q5
An object has a mass of 1500g. Will it float or sink?
Sink. It has more mass than water.
Unknown. It depends on the density of the object.
Float. It has less mass than water.
Sink. It is more dense than water.
30s
• Q6
You pour 500mL of water. What is the mass of that much water? (The density of water is 1g/mL)
250g
Unknown. Not enough information.
500g
1000g
30s
• Q7
You have 85mL of water in a graduated cylinder. You add a rock to the water and it sinks. Now the cylinder reads 103mL. What is the volume of the rock?
18mL
103mL
18g
Unknown. Can't find volume this way.
30s
• Q8
Which has more density: a drop of pure water, or 500 gallons of pure water?
Drop of water, because it has lower volume.
500 gallons, because it has more mass.
Can't tell without measuring.
Same density. Density doesn't depend on amount.
30s

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