Draw the particle arrangement of the particles in a solid
Question 19
19.
Draw the particle arrangement of the particles in a liquid
Question 20
20.
Draw the particle arrangement of the particles in a gas
State the equation for density
Density = Mass/Volume
Density = Volume/Mass
Density = Mass x Volume
Denisty = Volume x Mass
State the units for density
Kilograms per metre cubed
grams per metre cubed
centimetres cubed
kilograms cubed
If an object with a density of 1010 kilograms per metre cubed was placed into a liquid with a density of 1000 kilograms per metre cubed would it float or sink?
Float
Sink
Describe the particle model of solids
Particles all touching (bonded) in rows
Particles randomly placed, almost all particles touching.
Particles placed randomly, none or very few touching.
Describe the particle model of liquids
Particles all touching (bonded) in rows
Particles randomly placed, almost all particles touching.
Particles placed randomly, none or very few touching.
Describe the particle model of gases
Particles all touching (bonded) in rows
Particles randomly placed, almost all particles touching.
Particles placed randomly, none or very few touching.
Name the change of state for solid to liquid
Freezing
Melting
Condensation
Boiling
Sublimation
Name the change of state for liquid to a gas
Freezing
Melting
Condensation
Boiling
Sublimation
Name the change of state for liquid to a solid
Freezing
Melting
Condensation
Boiling
Sublimation
Name the change of state for solid to a gas
Freezing
Melting
Condensation
Boiling
Sublimation
Describe the movement of particles in a liquid
particles vibrate about a fixed position
particles can slide past each other
particles move freely in all directions
Describe the movement of particles in a solid
particles vibrate about a fixed position
particles can slide past each other
particles move freely in all directions
What is temperature?
how hot something is
the average amount of kinetic energy
the total amount of kinetic energy and potential energy in a substance
What is internal energy?
how hot something is
the average amount of kinetic energy
the total amount of kinetic energy and potential energy in a substance
Why does the temperature not change during a state change?
energy is being lost to the surroundings
energy is used to make particles move
energy is used to break/form bonds
Why does the temperature change when a substance is heated?
kinetic energy increases
kinetic energy decreases
it gets hotter
What does heating do to the internal energy of a system?