Chapter 2

Question 1

Positive Charge Ion

Answer 1

Cations (Atom Loses Electrons)

Question 2

Negative Charge Ion

Answer 2

Anions (Atom Gains Electrons)

Question 3

Isotope

Answer 3

An element with the usual number of protons, but a different number of neutrons. They have a different mass.

E.x: Ne-21 or 21/10Ne: 10 Protons, 11 Neutrons

Question 4

Diatomic Molecule (Cannot be Separated)

Answer 4

Br₂, I₂, N₂, Cl₂, H₂, O₂, F₂

Question 5

Calculate Atomic Mass of Isotope

Answer 5

Atomic Mass = Σ (Fractional Abundance of isotope) X (Mass of Isotope)

Question 6

Grams to Moles

Answer 6

1.) Mass of 1 mole of atoms is called molar mass

2.) Mass of molar mass in g is equal to atomic mass (amu) -> find mass on periodic table to determine how many AMUs are in 1 mole for each element

3.) 1 mol = amu in g/1mol

Question 7

Moles to Atoms

Answer 7

1 mol = 6.022 x 10²³

Question 8

Molarity

Answer 8

M = mol/L