Density - Part 2 Question Preview (ID: 34347)


CBA 2 Review TEKS 6.6B - Calculate Density To Identify An Unknown Substance. TEACHERS: click here for quick copy question ID numbers.

A substance has a density of 2g/mL. When you drop it in water it will...
a) sink
b) float
c) sink at first but then float
d) none of the above

In an oil spill, the oil floats on top of the water. This is because the oil is
a) less dense than water
b) more dense than water
c) just as dense as water
d) none of the above

Oil and vinegar salad dressing must be shaken to mix them. How is this an example of density?
a) the oil and vinegar have different densities and separate
b) the oil and vinegar have the same density and separate.
c) The oil and vinegar's densities keep changing.
d) You can't calculate density of oil and vinegar.

Which best describes displacement?
a) measuring how much matter is present in a substance by using a scale
b) measuring how much space matter occupies by using a graduated cylinder
c) measuring how dense matter is by using the density formula.
d) none of the above

If a scientist comes across an unknown element,, could she use density to identify the element?
a) yes, because each element has a specific density
b) no, because density changes easily
c) maybe, if she can determine the element's melting point
d) scientist don't use density

Calculate the density of a material that has a mass of 52g and a volume of 13 cm3
a) 65 g/cm3
b) 39 g/cm3
c) 4 g/cm3
d) 0.25 g/cm3

A student measures the mass of a 8 cm3 block and its 12.9 g. What is the density of the block?
a) 0.62 g/cm3
b) 1.61 g/cm3
c) 20.9 g/cm3
d) 4.9 g/cm3

Calculate the density of a substance that has a mass of 171 g and a volume of 15 cm3. Which element have you discovered?
a) Gold 19.3 g/cm3
b) Mercury 13.5 g/cm3
c) Lead 11.4 g/cm3
d) Iron 7.87 g/cm3

What tool would you use to measure mass?
a) triple beam balance
b) thermometer
c) ruler
d) graduated cylinder

In the equation D = M/V, what does the M stand for?
a) milliliter
b) mass
c) matter
d) mom

What are the units for density of a liquid?
a) grams per milliliter
b) grams per cubic centimeter
c) grams per degree Celcius
d) grams per ounce

A life jacket floats on water. WHat do you know about the life jacket?
a) It is more dense than water
b) It is less dense than water
c) It is just as dense a water
d) none of the above.

Only solids, not liquids, can sink or float in water
a) True
b) False
c)
d)

A scientist is given a sample of metal of an unknown element. To identify the element using density, the scientist must first measure the sample's
a) conductivity and volume
b) malleability and luster
c) temperature and mass
d) mass and volume

What tool do you use to measure volume?
a) thermometer
b) graduated cylinder
c) triple beam balance
d) spring scale

In the equation D = M/V, what does the D stand for?
a) degree
b) displacement
c) density
d) denominator

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