Physics 1❤️ Flashcards
Say the Different theories for the atom in order
Dalton Thompson Rutherford Bohr
Explain JJ Thompson’s theory for the atom
Plum pudding- positively charged pudding and negative electrons in it
Explain how Rutherford proved Thompsons model to be wrong
His Assistants Geiger and marsden Did the famous gold foil experiment and discovered that there was a positive nucleus
How did borh prove Rutherfords model to be wrong
He realised that the electrons would be attracted to the positive nucleus so he discovered electron shells
What is the mass and the charge for all of the particles
Particle Mass Charge
Proton 1 +1
Neutron 1 0
Electron 0 -1
Describe the gold foil experiment
They fired positively charged alpha particles at a thin sheet of gold foil they expected most of the particles to go straight through however some were deflected and this help them discover the nucleus
What is the equation for density
mass
Density= ———
Volume
What is specific heat capacity
The amount of energy needed to change the temperature of 1 kg of a substance by 1°C
What is the equation for specific heat capacity
Change in thermal energy(J) = mass (Kg) x Specific heat capacity (J/Kg°) x Change in temperature
What is specific latent heat
The amount of energy needed to change 1 kg of a substance to another state
What is the equation for specific latent heat
Thermal energy for change in state(J) = mass (Kg) x Specific latent heat (J/Kg)
What is the equation for pressure
Force
Pressure= ———
Area
How does particles and area relate to temperature
The more particles there are the higher the pressure and the higher the temperature
What happens to pressure as you go further up into the atmosphere
The higher up you go there are less particles so the pressure is lower
What is the equation for pressure and liquids
Pressure due to a column of liquid (pa) = height of column (m) x density of liquid (Kg/m³) x gravitational field strength (n/kg)
