Density of Regular Objects

The amount of mass per unit of volume of an object or liquid

• density

• volume

• mass

• atom

An object that floats in water is _____________

• Less dense than water

• More dense than water

• Same density as water

What does density have to do with atoms?

• Density describes how atoms float

• Density describes how closely the atoms of an object are packed together

• Density describes how many atoms an object has

• Density?! Atoms?! They have NOTHING to do with each other!

If the mass of an unknown substance is 5.3 grams and the volume is 2 cm³. What would be its density? (round)

• 2.7

• 2.5

• 2.4

• 2.2

If the mass of an unknown substance is 105 grams and the volume is 35 cm.³ What would be its density? (round)

• 2.7

• 3.5

• 4.00

• 3.00

Calculate the density of the cube.

HINT: You have to find the volume!!

• 2 g/cm³

• 4 g/cm³

• 6 g/cm³

• 8 g/cm³

The unit for measuring density it

• cm3

• g

• ml

• g/cm3

You have calculated the density of an unknown substance to be 2.7g/cm3. Using the picture above what is the identity of the sample?

• zinc

• aluminum

• copper

• gold

You have calculated the density of an unknown substance to be 11.34g/cm3. Using the picture above what is the identity of the sample?

• gold

• copper

• lead

• silver

Tags

NGSS.MS-PS1-2

Which ones can be units for density?

• g/ mL

• g