Matter (yr9)

Created by

Rosa Cane-McCree

Cards (38)

whose model of the atom came first
Dalton
What model of the atom did JJ Thomson make
the plum pudding model
How did Thomson create the plum pudding model
He investigated rays given out by hot metal and found out that electrons were negatively charged but the atom had no overall charge. Coming to the conclusion that the atom had electrons and positive mass inside.
How were scientists enabled to investigate the understandings of the atom as time passed
As there were new advances in technology which allowed scientist to question it more
How is JJ Thomson's version of the atom different to Rutherford's version
As Rutherford has an orbiting electron around protons and neutrons in a nucleus but the plum pudding model only provided electrons and positive mass inside the atom
name 5 elements of a modern day atom model
1 protons
2 electrons
3 neutrons
4 nucleus
5 shells
how to work out density
$d=$ $mass/volume$
what is heat
a flow of energy due to temperature differences
what is temperature
the measure of hotness or coldness of a body so it is a measure of the motion of the particles. It tells us the average kinetic energy of all the particles in the object
What are the 3 units to measure temperature
Fahrenheit
Celsius
Kelvin
What is absolute zero
0*K
What 2 things affects the rate of heat transfer
1 The difference in the object's temperature
2 the surroundings
when something has a lower specific heat capacity is it harder or easier to heat up
easier
when something has a higher specific heat capacity, is it harder or easier to heat up
harder
how to calculate energy in a specific heat capacity (shc)
$E=$ $mass *$ $shc *$ $temp difference$
what is specific latent heat
the energy needed to change a substance of 1kg for the state, without any change in temperature
how to calculate energy in specific latent heat
$E=$ $mass*$ $slh$
what is specific latent heat of fusion
the energy required for a substance of 1kg to either change from solid to liquid or liquid to solid, without any change in temperature
what is specific latent heat of vaporation
the energy required for a substance of 1kg to either change from liquid to gas or gas to liquid, without any change in temperature
what is melting
the process of going from a solid to a liquid
what is freezing
the process for going from a liquid to a solid
what is vaporisation
the process of from a liquid to a gas
what is condensation
the process of going from a gas to a liquid
what is sublimation
the process of going from a solid to a gas
what is deposition
the process going from a gas to a solid
What model of the atom is this
Daltons Model
What model of the atom is this
Plum pudding model
What model of the atom is this
Rutherfords Model
What model of the atom is this
Bhors model
what did Dalton believe about the atom 
that all atom elements are the same
the atoms in one element are different from atoms in all other elements
what did JJ Thomson believe about the atom
an atom contains negative electrons
overall, atoms have no electrical charge (are neutral)
what did Rutherford believe about the atom
that there must be a positive mass as well as electrons
How did Rutherford create his model
he fired alpha particles at a gold piece of foil and some would pass through where as others would bounce back as they have hit a positive mass
What did Bohr believe about the atom
that the electrons must be moving in fixed orbits (electron shells) around the nucleus
what is physical change
the change of state that doesn't result in a new substance being formed
what 3 things can happen when you heat things up
1 it can change the energy stored within the system to increase the temperature
2 it can produce a change of state
3 it can make chemical reactions happen
what is specific heat capacity
the energy required to raise the temperature of 1kg of a substance by 1 kelvin (K)
what is the difference between specific heat capacity and specific latent heat  
that latent heat changes the state but the heat capacity changes the temperature