Structure of the Atom - Half Term 1 Flashcards
What is the relative charge of a proton?
+1
Where is the proton found?
Nucleus
An elements _______ number is the amount of protons it possesses
Atomic
What is a proton’s relative atomic mass?
1
What is the relative charge of an electron?
-1
Electrons are found in the _______ which ‘orbit’ (for now) the _______
a. shells
b. nucleus
True or False: the number of negative electrons ALWAYS equals the amount of protons in an atom, meaning atoms have no overall electric charge
True
What is an electron’s relative atomic mass?
1/2000 (we approximate this to be 0)
What is the relative charge of a neutron?
0 - they are neutral
Where is the neutron found?
In the nucleus
What is the relative atomic mass of a neutron?
1
Overall, the nucleus is (positive/negative/neutral)
Positive
What is the relative mass?
Number of protons + number of neutrons
What is the average radius of an atom?
1 nanometer (nm)
Where can you find the mass number of an element (relative to the symbol)?
On top (always the bigger number)
Where can you find the atomic number of an element (relative to the symbol)?
On the bottom
The radius of the nucleus is about _________ times smaller than the radius of the atom
10,000
What is an isotope?
An atom of an element with the same number of protons but a different number of neutrons
What is a nuclide?
It refers to a specific isotope that contains a certain number of protons and neutrons.
