Protons, Neutrons, and Electrons

Subatomic Particle

Charge Location Relative Mass

Electron Negative Outside Nucleus

Very Small

Proton Positive Inside Nucleus

Large

Neutron Neutral Inside Nucleus

Large

Protons = Atomic NumberElectrons = Atomic Number in Neutral AtomNeutrons = Atomic Mass- Atomic Number

Should make sense because all of the mass is inside the nucleus, so the mass minus the protons leaves the neutrons.

Protons?Neutrons?Electrons?

Protons?Neutrons?Electrons?

Protons?Neutrons?Electrons?

Protons?Neutrons?Electrons?

Short Hand Writing of Elements

B11

5Protons

Neutrons

Electrons

Rules For Atom Building

• You must fill the S’s before the P’s• You must fill the P’s before the D’s• Once you have the board filled with the right

amount of marbles you need to record it on your paper.

• You will also start doing electron configuration.• We will do an example when you go to stations

Si28

14Protons

Neutrons

Electrons

What would the electron Configuration for silicon be?

Isotopes

• Isotopes – atoms of the same element that have the same atomic number (same protons) but different atomic masses due to different number of neutrons.

• Same Protons• Different Neutrons• Ex. Chlorine 37

Chlorine 37

Ions

• An atom or group of atoms that has a positive or negative charge, cations are positive, anions are negative.

• If an ion has a positive charge that means it LOST ELECTRONS

• If an ion has a negative charge that means it gained electrons

• Only about addition or subtraction of electrons.

Example: Carbon Ions

12

6C

Neutral Carbon Carbon cation

C+2

C

What are the protons, neutrons, and electrons of each?

Carbon Anion-1