Mass is the amount of matter in an object, volume is the amount of space an object occupies, and density is the mass per unit volume of an object. Mass is measured in grams using a balance, volume is measured in liters or cubic centimeters by multiplying length, width, and height or using liquid displacement, and density is calculated by dividing an object's mass by its volume and expressed in grams per milliliter or grams per cubic centimeter. Volume can be measured through liquid displacement by placing an object in water and calculating the difference in water levels.

1. What are mass,
volume, and density?

2. Mass
 Amount of matter in an object
Metric Unit of Mass = gram
Method of Measurement:
Electronic Balance
Triple Beam Balance
Double pan Balance

3. Volume
 Amount of space occupied by an object
Metric Unit of Volume = Liter or cm3
Method of Measurement:
Length x Width x Height
Liquid Displacement

4. Density
 Mass per unit volume
Metric Unit of Density = g/mL or g/cm3
Method of Measurement:
Use the formula: mass
volume

5. How can I measure volume by
displacement?
 Put a measured amount of water in a
graduated cylinder
 Drop in an irregular shaped object
 Note water level
Final water level (volume)
– Initial water level (volume)
= volume of irregular object

6. Reflection
We have spent several days learning about the Scientific Method
and Metric System of Measurement
In your binders write for me:
 1-2 Paragraphs about the Scientific Method: What did you
learn?, Is there something you don’t understand?, Are you
comfortable with the terms?
 1-2 Paragraphs about Metric Measurement: What did you
learn?, Is there something you don’t understand?, Why should
we know the Metric System of Measurement?