Volume & Density

How much stuff can fit inside of something-

Usually a measurement  reserved for liquid because we can’t really measure liquid without putting it inside of something.

It can be found by using the formula V=L*W*H

We measure volume in terms of liters.  For our purposes, we will use milla-liters or ml

 So Length(meters) * Width(meters) * Height(meters)=

                         Volume(Meters Cubed)

 Another way to say meters cubed is cubic meters (smaller measurements will be cubic centimeters or cc’s or Cm3 or ml

 
To find the volume of a liquid we use a graduated cylinder.  The measurement of the cylinder will tell us how many ml of the liquid we have

To find the volume of an item that is not a perfect square and is not a liquid, we use water displacement.  Simply put water in a graduated cylinder and measure it.  Then drop the item into the cylinder and find out how much the new measurement is.  Then find the difference and that is the volume of the material.

L * W * H=V

12cm*.5cm*14cm=V

6cm2*14cm=V

84cm3 or 84cc=V

 Volume is how much stuff fits inside of something.  So regardless of shape or size, if two materials have the same volume, then the same amount of stuff can fit inside.  If a penny has a volume of 1ml and a plastic cube has a volume of 1cc then 1ml of water would be able to fit inside of each, regardless of the shape.

 Remember that 50ml of feathers has the same volume as 50ml of cement.  We are not talking about mass (weight) we are talking about how much stuff fits inside.
Density is a relationship between mass and volume-    Both are properties of matter.
Mass- (weight)  -  measured in grams and we find it by using the triple beam balance. Volume- (fits inside)-  measured in liters or ml or cm3 (cubic cm)-   We find it by using the graduated cylinder, water displacement or the formula length  X  width  X  height.
To find density, we take mass and divide by volume.  Density tells us how something will sit in relation to something else.   In other words a helium balloon is less dense than air, that is why it floats.   A brick is more dense than air, that is why it falls.
Today we are going to find the density of water.   The first problem is how to measure the mass of water since it won’t just sit on the triple beam balance.  Once you have figured that out you then have to figure out it’s volume.   When you have mass and volume use the formula  Density = mass/volume to find it’s density.    The density of water should be around 1, so you can see if you are close.  Since the water you put into the canister is from the fauset and might be cold or warm, it will be slightly less than 1 or slightly more than 1….. BE EXACT with your numbers- to the nearest hundredths place….. (for example - .91)