Density Flashcards
Density
Density Describes how tightly matter is compacted together in a substance
Volume
How much space a substance takes up
Mass
The amount of matter in a substance
Density Formula
Mass divided by volume
Mass Formula
Density x Volume
Volume Formula
Mass divided by density
What makes something more dense
Tightly closer packed particles are denser as there are more particles
What decreases density
Heating particles (causing them to spread out) decreases density
When does density increase
Density increa
ses as the particles become more tightly packed
Why do solids have the highest density
Solids have the highest densities as their particles are closely packed
How to calculate volume
Length times width times breadth
How to calculate density of a liquid
- Use balance to measure the mass of an empty graduated cylinder
- Add the liquid into the graduated cylinder and then calculate the mass using a balance.
- The difference between both masses is the mass of the liquid itself
- Record the volume of the liquid
- Use density formula to calculate formula
Archimedes Principle
If you place an object in water the volume of the water displaced out of the container is equal to the volume of the object
What does the density of a material determine?
The density of a material determines whether it will float or not
How will an object float
An object floats if it is less dense than the liquid it is put in
How will an object sink
An object will sink if it is denser than the liquid it is put in
What will a less dense liquid do?
A less dense liquid will will float on a liquid with higher density
To float
|To mover or hiver slowly and lightly in air or on the surface of a liquid
Why does Ice float
As water freezes its particles spread out and form ice. Ice can float on water as its particles are not compact thus making it less dense
Flotation
A solid will float if it has a lower density that the liquid it is placed in
A liquid will float on top of another liquid if it has a lower density than that liquid
How to Calculate Density
- First calculate the mass using a mass balance
- Calculate the volume using the volume formula. Length by Width by Height
How to Calculate the Density of an Irregular object
- Mass: Use a balance to calculate the mass of the irregular object
- Completely fill an overflow can with water
- Place the irregular object inside the can
- Collect the displaced water in a graduated cylinder. The amount of water in the graduated cylinder is equivalent to the misplaced water and also the volume of the irregular object
How to Calculate the Density of an Irregular object
- Mass: Use a balance to calculate the mass of the irregular object
- Completely fill an overflow can with water
- Place the irregular object inside the can
- Collect the displaced water in a graduated cylinder. The amount of water in the graduated cylinder is equivalent to the misplaced water and also the volume of the irregular object
