Intro to Chemistry
Atomic Structure
Periodic Table
Chemical Bonds
Chemical Reactions
Kinetic Molecular Theory
Thermochem
This is NOT chemistry!
100
What is the difference between a physical change and a chemical change?
A chemical change involves the the production of a new substance through a chemical reaction. A physical change is just a change in form.
100
Which subatomic particle is involved in bonding? Be specific!
Valence electron
100
What property of atoms corresponds to its group number?
Number of valence electrons
100
Which type of bond is described as a two nonmetals sharing valence electrons?
Covalent Bond
100
What type of reaction is described as a single reactant breaking into two or more products?
Decomposition Reaction
100
Which state of matter has a fixed volume but no definite shape?
Liquid
100
What unit is thermal energy measured in?
Joules
100
Name two presidents born in Massachusetts
John Adams
John Quincy Adams
John F. Kennedy
George W. Bush
200
How many significant figures are in the number below:
0.005020
4
200
Which subatomic particle varies between isotopes of the same element?
Neutron
200
What element is found in period 4, group 7?
Manganese (Mn)
200
What is the name of the following compound?
Cu3(PO4)2
Copper (II) Phosphate
200
What is the symbol for aqueous and what does it mean?
(aq)
Aqueous means a substance dissolved in water
200
If a fixed amount of gas at a constant volume gets heated up, what would happen to its pressure?
Pressure would increase
Gay-Lussac's Law
200
If a reaction occurring in a calorimeter causes the temperature of the water to increase, what type of reaction took place: endothermic or exothermic?
Exothermic
200
What are the first 9 numbers of pi?
3.14159265
300
Which of the following is NOT an example of a mixture?
A) corn starch C) Pizza
B) Salad D) Air
A) Corn Starch
300
Define "cation"
An atom that has lost an electron and has a positive charge
300
What family is found in the middle of the periodic table?
Transition Metals
300
Which of the following compounds would have the highest boiling point?
A) H2O C) HCl
B) CH4 D) FeO
D) FeO
300
Balance the following equation:
__ NH3 + __ O2 --> __ N2 + __ H2O
4 NH3 + 3 O2 --> 2 N2 + 6 H2O
300
Which phase change is being described below?
A substance with a fixed particle arrangement and low kinetic energy absorbs enough heat energy to overcome its attractive forces and its particles begin to flow around one another.
Melting
300
Substance A has a specific heat of 1.2 J/gC and Substance B has a specific heat of 2.4 J/gC. If both substances both gain 1000 J of energy, which substance would have the higher final temperature?
Substance A
300
Who won the first season of Survivor in 2001?
Richard Hatch
400
If 80 mL of maple syrup has a mass of 109.6 g, what is the density of maple syrup?
109.6 g / 80 mL = 1.37 g/mL
400
What is the charge of Oxide?
-2
400
What is the most electronegative element on the periodic table?
Fluorine
400
What type of bond would form from a compound made of two elements with electronegativities of 3.8 and 1.2?
A) Ionic C) Metallic
B) Covalent D) Ionic or Covalent
A) Ionic
400
What would be the products for the decomposition of K2CO3
K2O + CO2
400
How many grams of carbon dioxide are present in 500 L at 2.0 atm and 300 K?
PV = nRT
(2)(500) = n(0.0821)(300)
n = 40.6 mol x 44 g/1 mol =
1786.4 g H2
400
Identify the three types of heat transfer that we have learned and an example of each.
Conduction - anything in which heat is transferred through direct contact
Convection - anything in which heat is transferred due to the movement of a fluid
Radiation - anything in which heat is transferred without direct contact
400
Most of you were born in either 2007 or 2008. Name the Chinese animal for at least one of these years. (extra 200 points if you get both).
2007 - pig
2008 - rat
500
A student takes the following measurements:
73.1 mL, 72.4 mL, 74.8 mL, 73.9 mL
The true value of this experiment is 72.8 mL, what is the percent error if the student takes the average of their measurements.
(73.1 + 72.4 + 74.8 + 73.9) / 4 = 73.55 -> 73.6
(73.6 - 72.8) / 72.8 = 1.10%
500
An atom with 12 protons, 14 neutrons, 13 electrons...
A) has a positive charge
B) has a mass number of 26
C) Has an atomic number of 14
B) has a mass number of 26
500
What is special about Noble Gases?
They generally do not make bonds due to having eight valence electrons in their outer energy level.
500
Draw the lewis structure for HNO
500
Write a balanced equation is which a precipitate is formed
Answers may vary
500
How many grams of Oxygen gas are present in 15 liters at STP?
15 liters x 1 mol/22.4 L x 32 g/1 mol = 21.4 g
500
Draw a picture of a calorimeter and explain how they work and what they measure
A calorimeter surrounds a system with water.
Calorimeters measure the change in energy in a reaction by measuring the change in temperature of water.
500
Even though it doesn't exist, the unicorn is the national animal of what country?
Scotland