Flashcards in 2.1 The Structure Of Atoms Deck (12)
Where is most of the mass of an atom concentrated?
Nucleus - protons and neutrons.
What is the majority of the volume of an atom due to?
The electrons - nucleus small compared to total size of atom.
What is the relative mass and charge of a proton?
What is the relative mass and charge of a electron?
What is the relative mass and charge of a neutron?
What are nucleons?
Protons and neutrons - particle in nucleus of atom
What is the atomic number?
Number of protons in nucleus of an atom.
What is the mass number?
Number of protons and neutrons in nucleus of an atom.
How many protons are in the nucleus?
Ame as number of electrons since atom is neutral.
How many neutrons are in the nucleus?
Mass number - atomic number.
What is a positive ion?
Charged particle formed when atom loses electrons, fewer electrons than protons.