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What are the subatomic particles?
Protons, Neutrons, and electrons
What is the only element that doesn’t contain all three subatomic particles
Hydrogen doesn’t contain neutrons
What is the charge of a proton?
Positive
What is the charge of a neutron?
No charge
What is the charge of an electron?
Negative
What is the relative mass of a proton?
1
What is the relative mass of a neutron?
1
What is the relative mass of an electron?
Negligible (1/1836)
What are nucleons?
The subatomic particles in the nucleus, protons and neutrons.
Where are the electrons situated in an element?
They occupy the space outside the nucleus and orbit the nucleus in an electron cloud.
What number tells you how many protons there are in the element?
The Atomic number or the proton number
What is the mass number?
Protons + Neutrons
What defines the element?
The proton number
Define isotope
atoms of the same element (same proton) but different number of neutrons, e.g. Chlorine-35 has 18 neutrons, but Chlorine-37 has 20 neutrons
Define Ion
Atoms of the same element with a different electron number.
What is the relative atomic mass relative to?
Carbon-12
Note 
Flashcard (237)