4.1 Chemistry Study Guide Flashcards
Protons charge
Positive
Protons mass
Heavy or 1 amu
Protons location
Nucleus
Proton function
Determines the identity of the atom
Neutron charge
No charge
Neutron mass
heavy or 1 amu
Neutron location
Nucleus
Neutron function
Holds the nucleus together
electron charge
negative
Electron mass
almost nothing
Electron location
Outside the nucleus
Electron function
Responsible for reactivity
Isotope definition
The electrons that are located on the outer level.
How to determine the atomic mass?
Protons + Neutrons= atomic mass
How to find the element?
Look on the periodic table and look for the amount of protons it has.
Net charge?
protons- electrons= net charge
Why isotopes can be useful in scientific research?
Isotopes can help determine how old a fossil is because of the radioactivity.
