Properties Of Matter Flashcards
(27 cards)
When the gradient of the line is positive what does the temperature do
The temperature of the substance increases
When the gradient of the line is negitive what does the temperature do
The temperature of the substance decreases
When the temputure of a substance remains constant what is the material doing
The material is changing state
What is pressure
The pressure is a force acting per unit area
How do you calculate pressure
Pressure=force (newtons) ÷ area( m²)
What is the unit of pressure
Nm-² witch are the same as the units of pascal’s (pa)
For the same force a smaller area will produce… presure and a bigger area will produce…pressure
smaller area will produce larger pressure and a bigger area will produce smaller pressure
When the pressure of gas decreases what happens to the volume and why
the volume increases because the gas particles have further to travel, at the same speed wich means there’s fewer collisions per second with the container walls
What equation can be used for boyles Law
𝑝resure1 𝑉olume1 = 𝑝ressure2 𝑉olume2
What do you measure temperature in
Kelvin
How could you calculate pressure
𝑝1. p2. F
— = — or p —
𝑇1. T2. A
What happens to the pressure of gas when the temperature increases
The pressure of a gas increases because the gas particles are moving faster because they have more kinetic energy
When there are more collisions per second to the container walls what happens to the force
The collisions have increased in force
What equation is for kelvins law
Volume1. Volume2
— = —
Temperature1. Temperature2
What is the combined gas equation
pV
— = K
T
What is heat and what is it measured in
Heat is a form of energy, measured in joules (J)
What is the specific heat compasity
The heat energy associated with 1 kg of a substance changing temperature by 1⁰C is the specific heat capacity
How do you find specific heat compastiy
𝐸𝐻 = 𝑐𝑚∆
How do you find specific heat compasity and laten heat when the heat energy isn’t known
𝐸 = 𝑃𝑡
If two different substances are given the same amount of energy for the same amount of time what will happen
they will have different temperature rises as they have different specific heat capacit
What doesn’t heat energy need to change to be called spific later heat
The heat energy needed to change the state of 1 kg of a material is called the specific latent heat.
What is laten heat of vaporirisation used for
The change between liquid and gas
What is laten heat of fusion used for
The change between solid and liquid
How do you calculate laten heat
Heat energy (j) = 𝑚ass (kg) × spitfire laten heat (jkg‐¹)
