P6 Molecules And Matter Flashcards
What is density
How much mass is in a given volume
Equation which links density, mass and volume
P=m/v density = mass/volume
What does a vernier caliper do
accurately measure linear dimensions such as lengths, depths, and diameters.
What does a micrometer do
measures the size of a target by enclosing it.
How accurate is a vernier caliper
1/10 mm
How accurate is a micrometer
1/100 mm
What is the archimedes principle
The volume of water that is displaced by a submerged object is the volume of that object
Step 1 of rock density practical
Find the mass of your object using a balance
Step 2 of rock density practical
Fill up the eureka can to the point just before it comes out of the tube
Step 3 of rock density practical
Put a beaker underneath the tube so the displaced water can be collected
Step 4 of rock density practical
Get a rock on a string and put it in the water until it displaces it
Step 5 of rock density practical
Put the water collected in the beaker into the measuring cylinder this helps you to find out the volume
Property of an object in solid state
Keeps the same volume and keeps the same shape. Can’t compress
Property of an object in liquid state
Flows and takes up shape of its container. Hard to compress
Property of an object in gas state
Flows and expands to fill its container. Can be compressed
Property of particles in a solid
Particles vibrate around a fixed position
Property of particles in a liquid
Particles can move around but stay close together
Property of particles in a gas
Particles are far apart. Particles move around very fast. When they collide kinetic energy is produced
What is absolute zero
The lowest temperature something can be
What temperature is 0 kelvin (0K) in degrees celcius (°c)
-273°c
What is the relationship between kelvin and celcius
1k=1°C
What is the relationship between temperature and particles movement
The higher the temperature the faster the movement of particles
What is the relationship of average speed of particles and temperature in gases
The average speed of particles is directly proportional to temperature
What causes the pressure of gases
The forces exerted as the particles hit the walls of the container
Equation which links pressure force and area
Pressure = force/area
What is pressure measured in
Pascals (Pa) 1Pa=1n/m^2
What is specific latent heat
The amount of energy needed to change the state of unit mass of a pure substance without a change in temperature.
What eqaution links thermal energy, mass and specific latent heat
E=ML thermal energy=mass x specific latent heat
What is internal energy
The total amount of kinetic and potential energy of all particles in a system
What equation links thermal energy, mass, specific heat capacity and temperature change
E=MC△θ
What is specific heat capacity
The thermal energy required to raise the temperature of a 1kg material by 1K
What is brownian motion
Particles in a fluid move in random directions
What happens if you decrease the temperature of a balloon
It shrinks
Relationship between volume and pressure
The higher the volume the higher the lower the pressure
Relationship between volume and pressure
The higher the volume the higher the lower the pressure
