math review

what is waters density in imperial and metric

62.4 lb/ft3 10 lb/gal
1000 kg/m3 1 kg/L

what is waters density in US

8.33 lb/gal

what is airs density in imperial and metric

0.076 lb/ft3
1.29 kg/m3

what is the relative density of air

1

what is the relative density of water

1

what is the relative density of mercury

13.6

what is the relative density of methane gas

0.6

what is the relative density of propane gas

1.5

what is the relative density of propane liquid

0.5

define brittle

will not bend without breaking

define ductile

may be stretched or drawn to shape

define malleable

can be beaten rolled into shape

define tenacious

resists deformation

define adhesion

unlike molecules stick together

define cohesion

like molecules stick together

define fluidity

ability to flow

define viscous

resists to shearing or flow

define surface tension

forms due to cohesive forces

define diffusion

2 or more gases mixed rapidly to make a uniform mixture

what are the two factors that determines which states matter exist in

temperature and pressure

what two changes do substances continuously go through

physical and chemical change

what is a compound

substance made up of molecules on 2 or more different kinds of atoms chemically joined

what is a mixture

different molecules that are not chemically combined

what is a solution solvent and solute

a mixture where one substance is dissolved by the other solvent is the dissolver and solute is the dissolved

what is the formula for density mass and volume

density = mass divided by volume
volume = mass divided by density
mass = density x volume

when is water most dense

4 celcius

what is a unique characteristic of density of water

water contracts when heated from 32 f to 39 f its volume decreases while density increases

formula for perimeter of a rectangle and triangle

rectangle: L + W + L + W
triangle: A + B + C

formula of circumference/perimeter of the circle

pie times diameter

formula for area of rectangle and triangle

rectangle: L x W
triangle: B x H divided by 2

formula of area of circle

pie x radius squared

formula for calculating percentage

part % times whole
% part divided by whole
whole part divided by %

formula for grade run and drop

grade drop divided by run
run drop divided by grade
drop grade times run