Structure Of The Atom Flashcards
What is an element
A substance made up with only one type of atom
What is an atom
The smallest part of a particle that can exist
What are atoms made of
Atoms are made of sub atomic particles called protons , neutrons and electrons .
Where are the sub atomic particles found within the atom
Protons and neutrons are found within the nucleus and electrons orbit the nucleus in shells
What is the relative mass and charge of a proton
A relative mass of 1
A relative charge of +1
What is the relative mass and charge of a neutron
A relative mass of 1
A relative charge of 0
What is a relative charge and mass of an electron
Mass is 1/1835
Charge of -1
What is the atomic number
The number of protons in the nucleus
What is the relative mass of an atom
The total of protons and neutrons in the nucleus
How do we find the amount of neutrons
The relative mass - the atomic number
Why is the amount of protons equal to the amount of electrons
Protons are positively charged and electrons are negatively charged . An atom is usually neutral therefore the number of protons is equal to the amount of electrons
