Post on 01-Jan-2016
Group Two
Will a Pepsi Float in Water?
Will a Diet Pepsi Float in Water?
Putting out Candle w/ Dense Gas
Mass measured in grams (g)A triple beam balance
or electronic scale
1 Kg= 2.20 pounds (lbs)
Nickel weighs 5 grams
How many kg does one student weigh?
VolumeVolume is like a
kid jumping into a pool: the water-level rises
Volume is the amount of space something takes up
Volume is measured in Liters
Read the bottom of the meniscus “curve”
Volume is taken in graduated cylinders (like this one)
morrisonlabs.com
Volume
Measure Volume
Solids cm³
Liquids mL
Density
Density = (mass/volume)
What are the units of density?
I Density
Density = m /v
DensityHaving less density
than the water keeps this boat afloat
Why does a life jacket prevent you from drowning?
geekologie.com
Percent Error
Percent error is a way of comparing the observed value to the accepted value
Formula for Percent Error
Percent Error
Students observed a density to be
The accepted value is
Example
Negative Sign?Percent Error = -6.17%The negative sign does not mean that the error was less than zero