Atoms Flashcards
What is an atom?
An atom is the smallest unit of an element that upholds all of the properties of that element.
What are atoms made up of?
Subatomic particles: Protons (+), Neutrons (N), and Electrons (-).
Where are protons and neutrons located?
The nucleus of an atom.
What determines the mass of an atom?
Protons and neutrons
What is the charge of a proton?
Positive
What is the charge of a neutron?
Neutral
What is the charge of an electron?
Negative
Where are electrons located?
Outside the nucleus of an atom in the “electron cloud.”
What are valence electrons?
Valence electrons determine the chemical properties of an element.
What are charged atoms called?
Ions
How does the electrical charge of atoms change?
When a atom gains or loses valence electrons the charge of the atoms changes.
