WorksheetsStates of Matter and Brownian Motion
Total questions: 21
Worksheet time: 16mins
Pollen grains suspended in water exhibit Brownian motion. How does a particle undergoing Brownian motion move?
In smooth curves
Randomly
Orderly with a pattern
In straight lines with no change of direction
A student makes an observation using a microscope. She observed some particles which were moving in a zig-zag way. What particles could these NOT be?
Smoke particles in air
Dust particles in a room
Pollen grains in water
Molecules in a solid bar of steel
Which of the following does NOT describe Brownian motion?
Light and fast moving particles can move heavier particles. Which one is a correct example of the light and the heavy particle?
Light : air molecule, Heavy : water molecule
Light : air molecule, Heavy : smoke particle
Light : smoke particle, Heavy : air molecule
Light : pollen grain , Heavy : water molecule
What evidence does Brownian motion provide about molecules of a gas or liquid?
Molecules are close together
Molecules are far apart
Molecules move continously but randomly
Molecules move continously and randomly
The average kinetic energy of the particles in a substance
internal energy
temperature
heat
thermodynamics
When a substance is heated, particles will
Move further apart
Get larger
Move closer together
Be unaffected
The process when a solid turns into a liquid
Evaporation
Sublimation
Freezing
Melting
The process when a gas turns into a liquid
Condensation
Sublimation
Freezing
Evaporation
The process when a liquid turns into a gas
Evaporation
Melting
Condensation
Deposition
The attraction between particles gives solids a definite
shape and volume
shape and color
shape and position
flow and radius
The energy an object has due to its motion
thermal energy
temperature
kinetic energy
Measure of the average kinetic energy of the particles in an object
thermal energy
temperature
kinetic energy
What is a gas?
It is firm and stable in shape.
It is a substance that flows freely but is of constant volume.
It is an air-like substance which expands freely to fill any space.
What is a solid?
It is firm and stable in shape.
It is a substance that flows freely but is of constant volume.
It is an air-like fluid substance which expands freely to fill any space.
What do these images show you in order?
Liquid, gas and solid.
Gas, solid and liquid.
Solid, liquid and gas.
Liquid, solid and gas.
What happens when a liquid is heated?
It changes to a solid.
It changes to a gas.
It disappears.
It explodes.
When does condensation happen?
When a gas escapes outside.
When a gas is heated.
When a gas is cooled.
When a gas touches a surface.
What is density?
mass * volume
mass
mass/volume
volume
volume/mass
The block of wood has a mass of 2.00 kg and a volume of 5.00 cm3. What is the density of the wood?
4 kg/cm3
.4 kg/cm3
40 kg.cm3
4.5 kg/cm3
A solid ball has a mass of 50 grams and a volume of 20 cm3. What is the density?
2 g/cm3
25 g/cm3
2.5 g/cm3
3 g/cm3
