Atomic Structure I
What are the 2 parts of an atom?
The nucleus and the electron cloud
What subatomic particles have about the same mass?
Protons and neutrons (REMEMBER NUCLEUS)
Where is most of the volume in atom?
Electrons in the electron cloud
This force is responsible for holding electrons close to the positively charged nucleus.
Attractive Force
What are the 3 subatomic particles that make up an atom?
Protons, neutrons, and electrons
What is the charge of a proton?
(+) positive
What subatomic particle never changes?
Protons
This force causes electrons to spread out and gives the electron cloud its volume.
Repulsive Force
What subatomic particle determines the identity of an atom?
What is the charge of a neutron?
No charge neutral
What is the symbol for proton neutron electron?
p ⁺
n⁰
e⁻
Even though protons repel each other due to having the same charge, the nucleus remains intact because of this.
Strong Nuclear Force
What particle(s) is found is the nucleus?
Protons and neutrons
What is the charge of an electron?
(-) Negative
True or false:
p⁺ and n⁰ are made of quarts
False, quarks
If the attractive force between the nucleus and electron cloud suddenly disappeared, this would happen to the atom.
The electrons would fly away and the atom would fall apart
What particle(s) is found in/on the energy levels/electron cloud?
Electrons
where is most of the mass in an atom?
In the nucleus
This is the main difference between quarks and electrons in terms of atomic structure.
Quarks are found inside protons/neutrons(smallest known particle), while electrons exist outside the nucleus
If the repulsive force between electrons suddenly disappeared, this would happen to the electron cloud.
he electrons would collapse closer together (and toward the nucleus), reducing the size of the electron cloud