Is it a Physical or Chemical Change
Formulas
Terms Related to Density
Practice Problems
Key Points about Density
Metric Conversions
100
Filling a balloon with hot air.
What is a physical change?
100
Mass / Volume
What is the formula for density?
100
The measurement of how much mass of a substance is contained in a given volume.
What is the definition of Density?
100
4.67g / 32.8mL. Find Density and say if it sinks or floats in water.
0.14g/mL. The object floats.
100
What can Density do when identified?
It can identify an unknown substance.
100
0.052 km = __________________ m
0.052 km = 52 m
200
Burning a piece of paper.
What is a chemical change?
200
Mass / Density
What is the formula for volume?
200
The amount of space an object takes up.
What is the definition of Volume?
200
1.74g/mL X 63mL. Find the mass.
1.92g
200
When measuring the Volume of a solid object, what unit is it usually expressed in?
In cubic centimeters.
200
3680 g = _________ kg
3680 g = 3.68 kg
300
Sugar dissolves in water.
What is a physical change?
300
density x volume
What is the formula for mass?
300
The measurement of the amount of matter in an object.
What is the definition of Mass?
300
22.95g / 15.45cm. Find density. Say if it sinks or floats in water.
1.49g/cm. The object sinks.
300
A measure of the force of gravity on you.
What is the definition of Weight?
300
_______ hL = 680214.4 cL
6.802144 hL = 680214.4 cL
400
Rotting yogurt in the refrigerator.
What is a chemical change?
400
distance/ time
What is the formula for speed?
400
What kind of property is Density?
A Physical Property
400
41g / 3.2g/mL. Find the volume.
12.81mL.
400
Why is density important to understand?
Density is an important physical property of a substance because each element has a specific density therefore it can help you identify an unknown sample.
400
0.067 m = ____________mm
0.067 m = 670 mm
500
What is a physical and chemical change?
500
speed x time
What is the formula for distance?
500
An object has the Density of 12.36 g/mL and the Mass of 6.52 g. What is the Volume?
0.528 mL
500
97kg / 105L. Find the density. Say if it sinks or floats in water.
0.92. This object floats.
500
What kind of property of an object is the Mass?
A physical property.
500
0.001772 kg = __________ cg
0.001772 kg = 177.2 cg