atoms,elements,molecules, and compounds. Flashcards
1
Q
atom
A
the smallest partical of an element that can exist.
2
Q
the element cannot be split and is made up of an atom
A
3
Q
molecule
A
the smallest particle that can exist
4
Q
compound
A
a substance made of atoms from two or more elements.
5
Q
proton
A
a particle of matter that has a positive electrical charge.
6
Q
neutron
A
a particle of matter that has no electrical charge.
7
Q
electron
A
a particle that has a negative electrical charge.
8
Q
atomic number
A
the number of protons in atoms.
9
Q
mass number
A
number of protons plus n
10
Q
chemical symbol
A
a one or two letter representation of an element
11
Q
subscript
A
tiny number to the right of the symbol tells you how many atoms of that element
