General Chemistry: Unit 1 and 2 Recap

Chapter 2

100

What subatomic particles make up the nucleus?

Protons and Neutrons

200

What is the (most important) constant that is used to get from grams to moles to atoms?

6.022 x 10²³ 

Avogadro's constant

300

What about an element changes in an isotope?

The number of neutrons

400

All elements on the periodic table can be categorized into three categories... what are the 3 categories?

Metals | Nonmetals | Metalloids

500

You have 64.607 grams of Silicon, how many atoms of Silicon do you have?

1.3846 x 10²⁴ atom Silicon 

Chapter 3

100

What has the properties of both a wave and a particle?

Photons

200

What are the four quantum numbers?

n= principal | l= angular momentum | m_l= magnetic | m_s= electron spin

300

Frequency, Speed of Light and Wavelength's relationship explained in an equation 

c=λν

400

λ=h/mu is known as which equation?

de Broglie equation

500

What's Rydberg's equation?

1/λ= R_∞[(1/n₁²)-(1/n₂²)]

Chapter 4

100

What is the electron configuration for Fluorine?

1s²2s²2p⁵

200

For alkali metals, which is larger: their atomic radius or their ionic radius?

Atomic Radius 

300

What are the three principles/rules of electron configuration? 

Pauli Exclusion Principle 

Aufbau Principle

Hund's Rule

400

The negative energy released when a gaseous atom accepts an electron is known as 

electron affinity

500

What element would you expect to have the highest initial ionization energy? When would you expect Beryllium's ionization energy to spike?

Helium

Beryllium's would spike after you take 2 and attempt to take the 3rd electron 

Chapter 5

100

Ionic compounds are made up of what?

A metal + a nonmetal

200

What are covalent compounds made up of and what are the two types of covalent bonds?

2(+) nonmetals and polar or nonpolar

300

Propane has a formula of C₃H₈... for propane this is it's _________ formula(s) 

Empirical AND Molecular

400

Potassium Permanganate, KMnO₄, has a molar mass of?

158.034 g

500

What's it's name: Cr₂O₇^2-

Dichromate (it's one of your polyatomics)

Chapter 6

100

A drawing that represents all the valence electrons as dots or dashes around elements is 

a lewis dot structure

200

What is resonance?

A human made concept that shows multiple ways of drawing the same compound

300

Boron and Xenon are similar in what way?

They both are exceptions to the octet rule.

(Boron has less than 8 and Xenon can have more than 8). 

400

If I bond Ga (1.6) to Br (2.8), what kind of bond does it have based on the electronegativity ratios?

1.2 is larger than 0.5 but smaller than 2.0 which makes it a polar covalent 

500

Give the equation of dipole moment

μ=Q*r