Chapter 1, history / Foundations of chemistry Flashcards
1
Q
protons
A
have a positive charge
2
Q
neutron
A
neutral charge
3
Q
electrons
A
negative charge
4
Q
atomic number
A
number of protons
5
Q
mass number
A
from protons and neutrons (p + n), can vary
6
Q
net charge
A
number of electrons, lose electron then net charge become positive
7
Q
isotopes
A
atom with same number of protons, but different number of neutrons
8
Q
ions
A
atoms where total number of electrons does not equal total number of protons
9
Q
anion
A
negative charge, gained electrons
10
Q
cation
A
positive charge, lost electrons
11
Q
mole
A
quantity of molecules = 6.022 times 10 to the 23rd. abbreviation: mol
