Units
Pascal (Pa)
Pressure
Solids, liquids and gases are three forms of matter that
are made of atoms, have mass and take up space
Is dissolving salt in water a chemical or physical change?
Physical
mass / volume
density
Substance changes form a liquid to a gas
evaporation
g/cm3 or g/mL
density
Pure substances consist of what?
elements and compounds
Which tool is best for separating a mixture?
filter
force / area
pressure
Which state of matter is NOT a fluid?
Solid
m2
area
Name one chemical property
reactivity, flammability or cumbustability
In which state of matter can particles slide past each other but are still packed together?
liquids
Force 1 / Area 1= Force 2 / Area 2
Pascal's principle
Upward force exerted on an object immersed or floating on a liquid is called
buoyant force
Newtons (N)
Force
Different substances in a mixture keep their ______________.
Properties
In which state of matter are particles in a rigid, fixed structure?
Solids
P1V1 = P2V2
Boyle's Law
Gas law relating volume to temperature
Charles'
mL or cm3
volume
How can chemical changes be reversed?
By a chemical change
Process of solid changing directly into a gas
sublimation
V1 / T1 = V2 / T2
Charles' Law
As the temperature of a gas at constant volume decreases, its pressure
decreases