Unit 1 Flashcards
The Location, Relative Mass, and Charge for: Electrons, Protons, and Neutrons
E: Outside Nucleus, negative, 0amu. P: Nucleus, positive, 1amu. N: Nucleus, neutral, 1amu.
How do you determine Average Atomic Mass?
Abundance Percent ÷ Isotope numbers + (repeat) ÷ 100 =
How do you determine what Isotope would be most abundant?
The number closest to the atomic mass of the element
How do you determine Half-life?
Take the original amount and split it in half. Repeat this with the new numbers until the amount of days given (i.e. 5 days) have been reached.
What requires energy and what gives off energy?
Requires: Making bonds. Gives off: Breaking bonds.
How do you know if a molecule is Polar?
It either has at least one lone pair or has more than one central element (does not include repeating surrounding elements).
List the Intermolecular Forces in increasing strength
- Ion-Ion
- Ion-Dipole
- Hydrogen Bonding
- Dipole-Dipole
- London Dispersion
Why do Ionic solids have higher melting points than covalent solids?
Ionic solids are non-molecular
How is energy required to melt a substance, related to its Intermolecular forces?
Metallic: More energy required
Polar: Medium energy required
Non-Polar: Low energy required
What is the name of the binary compound AgCl?
Silver Chloride
What is the name of the binary compound MgS
Maganese Sulfide
What is the formula of the binary compound Dicarbon hexafluoride?
C2 F5
What is the formula of the binary compound Iron (II) nitrite?
IN3
How do you calculate empirical formula?
Grams ÷ Percentage = Sum ÷ smallest overall sum = whole number = divide whole number by compound = Empirical formula
How do you determine Molecular Formula?
My
