Density 1
How do we calculate Density
Mass/Volume
How can we measure mass?
Triple Beam Balance or Digital scale
Calculate Density:
A block of aluminum occupies a volume of 15.0 ml and has a mass of 40.5 g. What is its density?
2.7g/ml
Calculate the mass of a liquid with a density of 2.5 g/mL and a volume of 15 mL.
M= d x v
37.5 g
What is density defined as
The amount of Matter in a given Space
How to find volume when an object is in a rectangular shape?
You multiply length width and height.
Calculate Density:
Mercury metal is poured into a graduated cylinder that holds exactly 22.5 ml. The mercury used to fill the cylinder has a mass of 306.0 g. From this information, calculate the density of mercury.
13.6 g/ml
Calculate the volume of a liquid with a density of 5.45 g/ml and a mass of 65 g.
11.93 mL
What are the units for density?
grams per ml and grams per cm^3
What will your unit be if you found the volume of a rectangular object?
Your object will always be cubed
Calculate Density:
What is the density of the brick shown below, given that it has a mass of 1,587 g? The bricks dimensions are 6cm, 5cm and 4cm.
11g/cm^3
Will this object sink or float:
Gold - 19.3g/cm^3
Sink
What does it mean if an item sinks water
It has a density of higher than 1g/ml
How do we find a volume of irregular shaped objects
Using a graduated cylinder
A student measures the mass of an 8 cm3 block of brown sugar to be 12.9 g. What is the density of brown sugar?
1.61 g/cm^3
Will this object sink or float:
Ice cube - 0.9g/cm^3
Float
What does it mean if an item floats in water
It has a density of lower than 1g/ml
Water Displacement
A chef fills a 50 mL container with 43.5 g of cooking oil. What is the density of the oil?
0.87 g/mL
Will this object sink or float:
Saturn - 0.687g/cm^3
Float