SC3a - Structure Of An Atom Flashcards
Who was John Dalton and what did he come come up with?
He was an English chemist, physicist and meteorologist and came up with the dalton model.
What was the dalton model?
An atomic model to help people understand what atoms were
What do all atoms have?
Protons, neutrons and electrons
What is the nucleus made of?
Protons and neutrons
What goes round the nucleus in an atom?
Electrons
What is the charge in each subatomic particle of an atom?
Proton= +1 Neutron= 0 or neutral Electron= -1
What is the mass of each subatomic particle in an atom?
Protons 1
Neutrons 1
Electrons almost 0
Where is all an atoms mass found?
Nucleus
How many times the nucleus is the size of the atom?
1000 times bigger
What is the mass number equal to?
The number of protons and neutrons
What is the atomic number equal to?
The number of protons
What is the mass number and atomic number in
72
Ge ?
32
72 is mass number and 32 is the atomic number
What is the number of electrons equal to?
Number of protons
