Atomic Structure Flashcards
Where are protons found, what is their relative mass and what is their charge?
Protons are found in the nucleus, their relative mass is 1 and the charge is +1.
Where are neutrons found, what is their relative mass and what is their charge?
Neutrons are found in the nucleus, their relative mass is 1 and the charge is 0.
Where are electrons found, what is their relative mass and what is their charge?
Electrons are found orbiting the nucleus, their relative mass is 1/1836 of the mass of a proton and the charge is -1.
What is the atomic number?
The atomic number is the number of protons in the nucleus of an atom.
What is the mass number?
The mass number is the total number of protons and neutrons.
What are isotopes?
Isotopes are atoms of the same element with different numbers of neutrons and different masses.
Do isotopes have the same physical and chemical properties?
Isotopes of the same element have the same chemical properties but different physical properties, so different masses.
An ion has:
A charge. The number of electrons is different from the number of protons.
What are positive ions called?
Cations.
Why are cations positive?
They have fewer electrons than protons.
What are negative ions called?
Anions.
Why are anions negative?
They have more electrons than protons.
