Equations and units
What is the equation for density?
D=m/v
A graduated cylinder has 10 ml of water in it. After adding a rock, it has 12.5 ml of water. What is the volume of the rock?
2.5 ml
Define mass
the amount of matter in an object
If something has a lower density than a liquid it will...
float
What is the curved line created by a liquid in a graduated cylinder?
meniscus
What is the equation for Mass?
M=DxV
A metal coin has a mass of 10 g and a volume of 1.4 cm3. What is its density?
7.14 g/cm3
Define density
the relationship between mass and volume or how compact something is
if something has a higher density than a liquid it will....
sink
In a dense object, are its particles closer or farther apart?
closer
What units do we use for volume?
cc, cm^3, or ml
What volume would 30 g of ethanol occupy if its density is 0.10 g/cm3 ?
300 cm3
Define volume
the amount of space something takes up
If something had the same density as a liquid it will.....
neither sink or float, it sits in the middle
What is the density of water?
1 g/ml
What is the equation for volume if you have density and mass?
V=M/D
A block of aluminum occupies a volume of 33.0 mL and has a mass of 45.5 g. What is the density?
1.38 g/ml
What is a density tower?
An experiment that shows different densities of liquids and objects
Is fresh or salt water more dense?
salt
How do you find density on a graph?
Mass/volume find an easy point that intersects both the x and y axis.
What units do we use for density?
What is the volume of a cube with a length of 5 cm?
125 cm3
What is a density graph?
A graph that shows density as the slope. Mass over volume
is warm or cold water more dense?
cold
two objects have the same mass. Object A has a smaller volume than object B. How will the densities differ?
Object B will have a smaller density than A