Electron theory Flashcards
What is everything made of?
Molecules.
What is a molecule made of?
a nucleus containing protons and neutrons, the electrons will be moving around the nucleus
What is an atom made of?
an atom is made of protons orbitiing electrons.
What charge does a proton have?
Positive.
What charge does an electron have?
negative.
what charge does a neuron have?
a neutral charge.
How many protons and electrons are in a neutral atom?
The same ammount of protons and electrons.
What is the simplest atom?
Hydrogen with 1 proton and 1 electron.
What is the heaviest atom?
Uranium with 92 protons balanced by 92 electrons.
How many protons and electrons does the copper atom have?
29 protons and 29 electrons.
What is current?
The Flow of electrons.
How do electrons flow?
Negative to positive.
How does convectional current flow?
Positive to negative.
How is current measured?
Amps (A)
What makes a good condutor?
If there are free electrons in the outer shell.
