click below
click below
Normal Size Small Size show me how
s8p1
Distinguish between atoms and molecules
Question | Answer |
---|---|
Atom | the smallest unit of an element that maintains the properties of that element |
Element | a substance that cannot be seperated or broken down into simpler substances by chemical means |
Nucleus | in physical science, an atom's central region,which is made up of protons and neutrons |
proton | a subatomic particle that has a positive charge and that is found in the nucleus of an atom |
Neutron | a subatomic particle that has no charge and that is found in the nucleus of an atom |
Electron | a subatomic particle that has a negative charge |
Atomic number | the number of protons in the nucleus of an atom;the atomic number is the same for all atoms of an element |
Neutral | having no overall charge |
Atomic mass | the mass of an atom expressednin atomic mass units |
Chemical symbol | one or two letter code that represents an elemnt |