Intro to Stochiometery
Molarity
Calculating Limiting Reactant
Regents Questions
Class Fun
100
What describes calculating reactants and products?
Stoichiometry
100
What substance consists of a solute and solvent?
Solution
100
These are the starting substances in a chemical reaction.
Reactants
100
What is the number of electrons in an atom with 37 protons and 49 neutrons?
(1) 12
(2) 49
(3) 37
(4) 86
Remember:
Electrons = Protons
Neutrons = Atomic Mass - Electrons
37
100
Name one of the zones we follow in class
Silent Zone or Talk Zone
200
Which runs out first in a chemical reaction?
Limiting Reactant
200
What is the substance that dissolves a solute?
Solvent
200
1 sandwich = 2 slices of bread + 1 slice cheese
You have:
6 slices bread
5 slices cheese
Bread
200
In the wave-mechanical model of the atom, electrons are located in regions called
(1) spectra
(2) quanta
(3) orbitals
(4) nuclei
Orbitals
200
Who is the most persevering student in class who still works when assignments get tough?
Arianna
300
What is product yield compared to the ideal amount?
Percentage yield
300
A solution that holds as much solute as possible is _____.
Saturated
300
1 taco = 1 shell + 1 meat + 1 cheese
You have:
4 shells
6 meat
5 cheese
Which ingredient is the limiting reactant?
Shells
300
Which statement describes a chemical property of chlorine?
(1) Chlorine has an atomic radius of 100. pm.
(2) Chlorine reacts with sodium to form a salt.
(3) Chlorine has a melting point of 172 K.
(4) Chlorine is a green-yellow gas at STP.
Chlorine reacts with sodium to form a salt.
300
Who is the class instigator?
Koren
400
What do balancing numbers in equations create?
Mole ratio
400
What is a measure of solute is in a solution?
Concentration
400
Reaction:
2 H₂ + O₂ → 2 H₂O
You have:
6 H₂ molecules
2 O₂ molecules
Which reactant is the limiting reactant?
O2
400
Which substance can not be broken down by a chemical change?
(1) Fe
(2) FeSO4
(3) Fe2 O3
(4) Fe2 (SO4 ) 3
Fe
400
Name the three class trackers we utilize for chemistry class
Attendance
Homework
Participation
500
What is the mass of the product that is made in lab?
Actual yield
500
How many grams of salt in 100g of 5% salt solution?
5 grams
500
Reaction:
N₂ + 3 H₂ → 2 NH₃
You have:
2 N₂
3 H₂
Which reactant is limiting?
H2
500
When the pH value of a solution is changed from 4.0 to 7.0, what is the change in the concentration of hydronium ions?
(1) decreased by a factor of 1000
(2) increased by a factor of 1000
(3) decreased by a factor of 3
(4) increased by a factor of 3
Decreased by a factor of 1000
500
What is Mr. Paige's favorite anime?
A) Jujutsu Kaisen
B) Dragon Ball Z
C) Attack On Titan
D) My Hero Academia
Dragon Ball Z