Show:
Measurements
Formulas
Terms Related to Density
Practice Problems
Key Points about Density
100
What is the density of water?
1.0g/mL
100
What is the formula for density?
Density = Mass / Volume
100
What is density?
The measurement of how much mass of a substance is contained in a given volume.
100
4.67g / 32.8mL. Find Density and say if it sinks or floats.
0.14g/mL. The object will float.
100
What unit is mass usually expressed in?
In grams (g)
200
What is the density of an object that sinks in water?
Greater than 1.0g/mL
200
What is the formula for volume?
Volume = Mass / Density
200
What is volume?
The amount of space an object takes up.
200
1.09.62g / 63mL. Find the density.
1.74 g/mL
200
What unit is volume usually expressed in?
In cubic centimeters (cm3).
300
What is the density of an object the floats in water?
Less than 1.0g/mL
300
What is the formula for mass?
Mass = Density x Volume
300
What is mass?
The measurement of the amount of matter in an object.
300
22.95g / 15.45cm. Find density. Say if it sinks or floats.
1.49g/cm. The object sinks.
300
Which is more dense: Water or Oil?
Water because its density is greater than that of oil. Plus oil stays on top of water.
400
What is the unit used to measure density?
g/cm3 or g/mL
400
An object has the Mass of 45.87 g and the Volume of 21.42 mL. Find the Density.
2.1414 g/mL
400
What does it mean to sink?
To fall under the water due to a density greater than 1g/mL.
400
41g / 12.8mL. Find the density.
3.2g/mL
400
I have two different objects. One has a mass of 34g and a volume of 7cm3. The other has a mass of 28g and a volume of 6cm3. Which of the two objects is the least dense?
The object with a mass of 28g and a volume of 6cm3 has the lowest density (4.67g/cm3) making it the least dense. The other object has a density of 4.86g/cm3 (34g/7cm3) making it the most dense.
500
4.6g/12.5mL. Find the density. Does it sink or float?
0.368g/mL. It floats.
500
An object has the Density of 4.67 g/mL and Volume of 3.91 mL. What is the Mass?
18.2597 g.
500
What does it mean for an object to float?
It stays at the surface of water due to a density less than 1g/mL.
500
97kg / 105L. Find the density. Say if it sinks or floats.
0.92. This object floats.
500
Why is density important to understand?
To figure out if an object sinks or floats in water, & to identify an unknown object