Law of Conservation of Matter
Chemical Equations
Balancing Chemical Equations
Chemical Bonding
Counting Atoms
Identify the Bond
Random Trivia
Physical/Chemical Changes
100
Matter cannot be __________ or __________.
Created, Destroyed
100
The arrow is pointing to it.
What is Subscript?
100
What is the missing coefficient?
2H2 + O2 ---> _____ H2O
2
100
Valence electrons are shared or transferred to form chemical _________.
Bonds.
100
3H2
The number of Hydrogen atoms.
What is 6?
100
H2
What is Covalent
100
The chocolate chip cookie was invented in 1938. When was the Oreo invented?
1912
100
For something to be considered a chemical change, a _____________ substance must be created.
What is New / Different?
200
Matter can only change _____ or______
Shape or form
200
The arrow is pointing to it.
.
What is Coefficient?
200
What is the missing coefficient?
___Na + O2 ---> 2Na2O
4
200
When valence electrons are transferred (gained or lost).
What are Ionic Bonds?
200
4HCl
The number of Chlorine atoms.
What is 4?
200
CO2
What is Covalent
200
The team who won the SuperBowl during the 2005-2006 season.
Who are the Pittsburgh Steelers?
200
In a physical change, a substance only changes in ______________.
What is Appearance?
300
A __________ chemical equation follows the Law of Conservation of Matter.
Balanced
300
The small red arrow is pointing to it.
What is Yield Sign?
300
What is the missing coefficient?
2Al2O3 ---> 4Al + ____O2
3
300
When valence electrons are shared.
What are Covalent Bonds?
300
4NaO2H2
The number of Hydrogen atoms.
What is 8?
300
Be2C
What is Ionic
300
If you were to fight every person in the world in a March Madness style bracket, how many people would you have to fight to be champion of the world? (How many rounds to the bracket?)
33
300
Identify the process as a chemical or physical change.
Dissolving Salt into Water to make Saltwater.
What is Physical?
400
In chemical equations, the sum of the masses of the reactants is _______ to the sum of the masses of the products.
Equal
400
The compounds found on the left side of a chemical equation.
What are reactants?
400
What are the missing coefficients?
____Fe + 4H20 ---> Fe3O4 + ____H2
3, 4
400
The closer atoms are to having 8 valence electrons, the more ___________ they are.
Reactive
400
5Mg2O2
The total number of atoms in the chemical formula.
What is 20?
400
Fr2S
What is Ionic
400
The amount of time the value Pi (π) has been known for. (how long ago it was discovered)
4,000 years
400
Identify the process as a chemical or physical change.
A plant preforming Photosynthesis.
Chemical Change
500
A Product in the chemical equation.
What is 2NH3?
500
The compounds found on the right side of a chemical equation.
What are Products?
500
What is the missing coefficient?
2C2H6 + ____O2 ---> 4CO2 + 6H2O
7
500
The purpose of chemical bonding is so that atoms can become ________. (the answer is not happy, use the scientific term).
Stable
500
2Na3PF4
The total number of atoms in the chemical formula.
What is 16?
500
HCl
Covalent
500
The amount of time Dinosaurs were actually seen on screen during the original Jurassic Park movie.
What is 15 minutes?
500
In an Exothermic Reaction, energy ___________ the reaction. These reactions often feel ____________. One example is ___________.
Exits, Hot/Warm, Fire
600
Identify a Reactant in the Chemical Equation.
What is N2 or 3H2?
600
The subscript tells us the number of __________ for each element while the Coefficient tells us the number of ___________.
Atoms, Molecules
600
What are the missing coefficients?
____HCl + ____Na ---> ____NaCl + H2
2, 2, 2
600
We discussed 5 signs that a possible chemical change has occurred. List 3 of those signs.
Bubbling / Fizzing, Unintentional Color and/or Temperature Change, Smoke / Fire, Formation of a Solid (precipitate)
600
4Ca2(OH)4
The total number atoms in the chemical formula.
What is 40?
600
NaKSe
Ionic
600
What is Napoleon Bonaparte's (French military leader) win percentage in major battles?
88%. He fought in 60 battles and lost only 7.
600
In an Endothermic Reaction, energy ___________ the reaction. These reactions often feel ____________. One example is ___________.
Enters, Cold, Cooking Food