Enterprise of Chemistry
Matter & Atoms
Electrons
Periodic Table of Elements
Chemical Bonds & Compounds
Stoichiometry, Moles, & Molarity
Potpourri
100
What is chemistry?
The study of the interaction of matter and energy
100
Atoms are composed of these three subatomic particles, what are their names and charges?
1) Proton (+)
2) Electron (-)
3) Neutron (0)
100
An electron has what charge?
Negative 1
100
An element is?
A compound composed entirely of atoms with the same number of protons.
100
How many electrons are involved in a chemical bond?
2
100
A mole is?
6.022 x 1023 things.
100
Name 3 of the previous 5 FIFA World Cup Winners
Germany, Spain, France, Italy, Brazil
200
What are the three Laws of Matter?
1) Law of Energy Conservation
2) Law of Mass Conservation
3) Law of Mass & Energy Conservation
200
There are three phases of matter names them.
1) Solid
2) Liquid
3) Gas
200
The number of electrons that a neutral atom has is equal to its number of?
Protons.
200
Who invented the modern periodic table of elements?
Dmitri Mendeleev
200
There are two major types of chemical compounds, what are they and what is their distribution of electrons?
1) Ionic: anion and cation.
2) Covalent: shared electron pairs.
200
Atomic mass is calculated by counting these two subatomic particles.
Protons & Neutrons
200
Name 3 of 5 of the All-time NBA Point Leaders
Kareem Abdul-Jabbar, Karl Malone, Kobe Bryant LeBron James, Michael Jordan.
300
What is the energy of motion, including the formula to calculate this type of energy?
Kinetic Energy = 1/2 m x v2
300
Chemical reactions are organized into two major categories those which produce energy and those which absorb energy, name them.
1) Endothermic
2) Exothermic
300
The outermost electrons on an atom are called?
The valence electrons
300
Define a periodic table group & and a periodic table period, what trait do all element in each category share?
Group: a column of elements, same # of valence electrons.
Period: a row of elements, same # of electron orbitals.
300
Ionic bonds are composed of two elements a ____ and an _____, what is the average difference in electronegativity between the two elements is _______.
Cation, Anion, & >1.7 units.
300
Calculating the number of grams of a compound is one mole requires what compound properties?
Chemical formula & compound atomic mass.
300
Name 3 of the past 5 most recent World Series winners.
Boston Red Sox, Houston Astros, Chicago Cubs, Kansas City Royals, San Fransisco Giants.
400
What is the energy of objects in relation to other objects, including the formula to calculate energy?
Potential Energy: U = M x G X height (m)
400
The atoms which make up compounds, materials, and substances have either the same chemical properties throughout, or have different properties throughout, what are the names for these terms?
1) Homogeneous: same properties
2) Heterogeneous: different properties
400
Provide the electron orbital diagram for Iron.
400
Name four periodic table groups
Common groups: Alkali Metals, Alkali Earth Metals, Chalcogens, Pnictogens, Halogens, Noble Gases.
400
Covalent compounds for between________ & _________ elements and the average difference in electronegativty between those elements are ______.
nonmetals & nonmetals, <0.7 units.
400
Balance this equation and provide the molar mass of each reactant and product:
CaCl2 + Cr(NO3)3 --> Ca(NO3)2 + CrCl3
3 CaCl2 + 2 Cr(NO3)3 = 3 Ca(NO3)2 + 2 CrCl3
CaCl2: 111 g/mol
Cr(NO3)3: 238 g/mol
Ca(NO3)2: 164 g/mol
CrCl3: 158 g/mol
400
If you have coulrophobia you are afraid of what type of colorful entertainment?
Clowns.
500
What equation relates matter and energy?
E = mC2
500
Chemical properties fall into two major categories, name them and provide examples of each.
1) Extensive: Dependent on quantity (mass, volume, temperature).
2) Intensive: Independent of quantity (density, specific heat, melting point, color).
500
Provide the electron configuration for Bromine
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p5
500
Electronegativity increases from ____ to _____ and ____ to _____ with ____ as the most electronegative element.
Left to right, and bottom to top, with Fluorine as the most electronegative element.
500
If the polyatomic ion NO3 2- is nitrate than NO2 2- is what?
Nitrite.
500
What is molarity? If 500 mL of 0.5 M CrCl3 is added to 3.75 L of 0.9 M CrCl3 what is the new molarity?
0.85 M
500
What is the total number of electoral college votes required to successfully win the election to the office of the President of the United States of America?
Bonus: What is the LOWEST number of states required to win?
1) 270
2) 11