Neutrons Protons Electrons Flashcards
(19 cards)
Rutherford carried out an experiment to find out about the?
Atom
What did he do to find out about atoms?
He fired alpha particles at thin gold foil
Describe what alpha particles are made of
They contain 2 neutrons and 2 protons, so they have a positive +2 charge overall.
What is the mass of a proton
1
What is the mass of a neutron
1
What is the mass of an electron
1/2000
What is the charge of a proton
+1
What is the charge of a neutron
0
What is the charge of an electron
-1
Where is the proton found
In the nucleus
Where is the neutron found
In the nucleus
Where is the electron found
Orbiting the nucleus
When two insulators are rubbed together they can be charged. This is because…
When two insulators are rubbed, electrons are transferred, causing them to become charged.
Objects become positively charged because they have _____ electrons
Less
Objects become negatively charged if they have _____ electrons
More
What are the uses of lightning rods
Protects buildings using a tall metal spike which allows electrons to flow through it to the ground
What are the uses of a smoke precipitator
Smoke passes through the negatively charged mech and becomes negatively charged.
Attracted to positively charged plates.
What are the uses of a paint sprayer
The paint rubs against something on the inside of the gun and the paint becomes positively charged. The paint is attracted to the negative charge of the pipe and creates the perfect paint job
What are the uses of earthing cables and what danger could it cause
Aeroplanes and tankers become charged due to friction with the air.
The cable allows electrons to flow into the ground preventing sparks which could cause fires or explosions.
