Plotting Graphs

Tables Add columns to vary data Must include units P/pa V/m

Tables Add columns to vary data Must include units P/pa V/m /V /m

P/pa /V /m P/pa 1/V /m

P/pa /V /m P/pa 1/V /m

P/pa 1/V /m To find the slope we take 2 points on the line not from the table X X (8,4) (22,11)

P/pa 1/V /m X X (8,4) (22,11)

Your turn – plot P against P/kPa v /cm

Exam advice Why keep mass constant?- So there will be only 2 variables. Why use slope of graph? So to give a weighted mean …use origin…line of best fit…ignore outliers

Unit Modifiers for Reference Smaller Deci = Centi = Milli = m Micro =  Nano = n Pico = p Fento = Larger o Kilo = 10 3 k o Mega = 10 6 o Giga = 10 9 o Tera = Examples: 5ma =.005a 10k  = 