Elements, Compounds and Mixtures
Periodic Table
Bonding
Chemical Reactions
Gases and Thermo
Moles
Stoichiometry
100
What does the atomic number always stand for?
The # of protons in an element
100
How is the periodic table arranged?
The periodic table is arranged by increasing atomic number
100
What is the difference between an Ionic Compound and a Covalent Compound
Ionic Compound - Metal and Non-Metal
Covalent Compound - Non-Metal and Non-Metal
100
What do you call the substances that you get out of a chemical reaction?
Products
100
Temperature unit for gas law calculations
What is ALWAYS Kelvin?
100
How many grams are in 6.02 x 1023 atoms of Lead?
207 g
100
The gift tag is, specifically is
To: coefficient of the unknown/coefficient of the given
200
How do you find the # of Neutrons in an element?
You have the subtract the Mass Number - the atomic number
200
Finish this: Groups have the same number of ___________ electrons, while Periods represent the number of __________________________.
Valence Electrons
Energy Levels
200
With respect to electrons, what is the difference between an Ionic and Covalent Bond.
Ionic - Electrons are Transferred
Covalent - Electrons are Shared.
200
How we know how many moles of a substance are in a chemical reaction.
What is the coefficient
200
Equation to used to calculate the energy required to heat up a substance.
What is q = m c delta T
200
The empirical formula of benzene, C6H6.
What is CH?
200
True or False: the equation does not need to be balanced
FALSE! Always start with a balanced chemical equation.
300
Name the 2 types of pure substances:
Compounds and Elements
300
Which Group is not reactive and explain why:
The Noble Gases, Group 8, is unreactive because they have a full shell.
300
The two types of ions and how they are formed.
What are cations, lose electrons and anions gain electrons?
300
How do we know how many molecules are in a chemical formula?
The Coefficient
300
A 57 g block of ice melts, the heat of fusion is 6.01 kJ/mol. Name the first calculation you must complete.
Q = m delta H
What is divide 57g by the molar mass of water.
300
How many moles is 40 grams of Carbon Dioxide?
.91 Grams of Carbon Dioxide
300
Solve this question:
How many moles of Oxygen are formed when 4 moles of KClO3 decompose?
2 KClO3 --> 2 KCl + 3O2
WHat is 6 moles oxygen
400
Give the 2 types of mixtures, explain what they are and give an example:
Homogeneous and Heterogeneous Mixtures. Homogeneous mixtures are the same throughout, heterogeneous are not uniform throughout.
400
Give the 3 main sections of the periodic table and a characteristic of each.
Metals are malleable, ductile, good conductors, and solid at room temperature.
Metalloids are semi-conductors,
Non metals are good insulators and mostly gases at room temp.
400
Draw the Lewis dot diagram for Na2O.
Each Na gives its once valence electron to oxygen to give each a stable octet. Here's a link that goes through this topic and has a picture if you scroll down.
https://saylordotorg.github.io/text_introductory-chemistry/s13-02-electron-transfer-ionic-bonds.html
400
List the coefficients needed in the following reaction to balance it.
KClO3 --> KCl + O2
What is 2,2,3?
400
Rearrange the ideal gas law to solve for number of moles.
What is
n = PV/RT
400
Determine the molecular formula when the empirical formula is SO2 and the molar mass is 128g
what is S2O4
400
Calculate the grams of sodium needed to make 2 moles of Na2O.
4Na + O2 --> 2Na2O
92 grams of Na
500
Name the diatomic elements
What are bromine, iodine, nitrogen, chlorine, hydrogen, oxygen and fluorine?
500
Which two groups are highly reactive and explain why:
Group 1 and Group 17 because they both are only 1 valence electron away from a full shell.
500
Determine the total number of atoms in (NH4)3PO4
What is 20?
500
What are the FIVE types of Chemical Reactions?
Synthesis
Decomposition
Single Replacement
Double Replacement
Combustion
500
What is the partial pressure of nitrogen collected over water that has a vapor pressure of 20.5 torr. The total pressure of the nitrogen and water vapor is 761 torr.
What is 740.5 torr?
500
What is the Molar Mass of H2SO4?
98 g/mol
500
How many moles of CaBr2 are formed when 80 grams of calcium react?
Ca + Br2 --> CaBr2
2 moles of CaBr2
600
Tell me two things about the electron sea model.
What are: explains how metals behave, they are malleable, ductile, have high boiling points, good conductors of heat and electricity
The metal atoms all share their valence electrons
600
Name the following groups of the periodic table:
1, 2, 3-12, 17, 18
Alkali Metals Group 1
Alkaline Metals Group 2
Transition metals Groups 3-12
Halogens Group 17
Noble Gases Group 18
600
Shape of BH3
trigonal planar
600
The name of an acid base reaction.
what is neutralization?
600
A balloon has a volume of 30L at 100K. The new volume when the temperature is raised to 200K.
What is 60L
600
What percent of FeCl3 is iron?
34%
600
Calculate the number of grams of hydrogen needed to form 34 g of NH3.
N2 + 3H2 --> 2NH36.0 grams of Hydrogen.