chem of matter vocab list Flashcards
1
Q
electron
A
a negtive charge in atom
2
Q
nucleus
A
the centre of an atom
3
Q
proton
A
a positive charge in an atom
4
Q
neutron
A
a netural part of an atom
5
Q
electron cloud
A
the region surrounding the nucleus
6
Q
atomic number
A
the number of protons in an atom
7
Q
isotope
A
atoms of the same element combined
8
Q
mass number
A
the sum of the number of protons and neutrons
9
Q
ion
A
it is when you gain or lose electrons
10
Q
chemical bond
A
holds atoms with one another
11
Q
atom
A
the smallest particle of element
