Mass, Temperature and Density Review

What is the definition of volume?The amount of space an

object takes up.

What is the name of the instrument used to measure the volume of a liquid?

Graduated cylinder

How is the volume of a liquid measured? Units?

Use a graduated cylinder.mL or L

How is the volume of a regular solid measured? Units?

length x width x heightcm3

1. What is the definition of mass? The amount of matter in an object.

2. What is the name of the instrument used to measure mass? triple beam balance

3. What are the units used to measure mass?

grams

Mass = 137.4 gm

1. What is density? Mass per unit volume

2. How is the density of an object measured?

Density = mass/volume

1. What is the density of one cup of water?

1g/mL

2. What is the density of half a cup of water?

1g/mL

1. What is the density of a 100gram object with a volume of 20 milliliters?

D = M/V= 100g/20mL= 5g/mL

2. The object above was cut into three pieces. What is the density of one of those pieces?

5g/mLThe density NEVER changes!

Explain why an object placed in a glass of water floats.

The object has a density less than the density of water (1g/mL).

Explain why an object placed in a glass of water sinks.

The object has a density more than the density of water (1g/mL).

Below is a list of the densities of different object. Will each one float or sink in water? Support your answer.

1. 0.38 g/cm3

2. 1.7 g/cm3

3. 1.2 g/cm3

4. 0.99 g/cm3

5. 100 g/cm3

float

float

sinksink

sink

It is less dense than water.

It is more dense than water.It is more dense than water.

It is less dense than water.It is more dense than water.

An object has a mass of 10g and a volume of 2cm3. Identify the density of the object.

D = M/V10g/2cm3

= 5g/cm3

1. Identify the liquid that is LEAST dense. Support your answer.

Pomegranate juiceIt is floating at the top.

2. Identify the liquid that is MOST dense. Support your answer.

White grape juiceIt is found at the bottom.

1. Identify the liquid that is LEAST dense. Support your answer.

Rubbing alcoholIt is floating at the top.

2. Identify the liquid that is MOST dense. Support your answer.

HoneyIt is found at the bottom.

3. Identify the solid that is LEAST dense. Support your answer.WoodIt is floating at the top.

4. Identify the liquid that is MOST dense. Support your answer.Steel nutIt is found at the bottom.

Identify the instrument used to measure mass.1.Thermometer2.Graduated cylinder3.Triple beam balance4.Metric ruler

The SI units used when measuring mass are1.milliliters2.centimeters cubed3.meters4.grams

Identify the instrument used to measure temperature.1.Thermometer2.Graduated cylinder3.Triple beam balance4.Metric ruler

Identify the SI units used to measure temperature.1.meter2.degrees Celsius3.grams4.Degrees Fahrenheit

Identify the SI units used to measure the density of a liquid.1.mL2.g/cm3

3.cm3

4.g/mL

Measurement Units

Length

Mass

Volume of a regular solid

Volume of a liquid

Density of a solid

Density of a liquid

mm, cm, m, km

g

cm3

mL or L

g/cm3 or g/mL

g/mL