Chemical Reactions
Identify the reactants and products in the following chemical equation:
H2 + NaCl ---> H2Na + Cl
Reactants: H2, NaCl Products: H2Na, Cl
What are Na, Cl, and O examples of?
Elements
Balance the following equation:
_____H2 + ____O2 ---> ____H2O
2 H2 + O2 ---> 2 H2O
What tool can we use to balance chemical equations?
A RAP table
2NH3 --> N2 + 3H2
A decomposition reaction
Where are subscripts found? What does a subscript tell you?
A subscript is the small number written below.
It tells how many of one type of atom there are.
What vocab word describes carbon dioxide (CO2)?
Compound
Balance the following Equation:
_____KClO3 ---> KCl + ______O2
2 KClO3 ---> 2 KCl + 3 O2
Which part of the chemical equation can you change to balance it?
The Coefficients
What type of reaction features multiple reactants, but one product?
A synthesis reaction
What is the Product of a chemical reaction and where is it located in a chemical equation?
The product is the new substance(s) formed after a reaction. It is always located on the right side of the equation.
What holds atoms in a compound together?
What is a chemical bond?
Balance the following equation:
____C3H8 + _____O2 ---> ____CO2 + ____H2O
C3H8 + 5 O2 ---> 3 CO2 + 4 H2O
Within a chemical formula, if you don't see a subscript, you can conclude that there are how many atoms of that element within each molecule.
One
Scooby and Shaggy went to explore the basement, while Fred and Daphne explored the kitchen. The monster ran through the entire house and began chasing all of them. After the chase, Scooby and Daphne went to check the backyard while Shaggy and Fred checked the attic. What type of reaction is this?
Double replacement reaction
What is the Reactant of a chemical reaction and where is it located in a chemical equation?
The reactant is the original substance(s) and it is always located on the left side of the equation.
What is the effervescent tablet we are working with for our final project?
Alka-Setzler!
Balance the following equation:
____P + _____O2 --->_____P2O5
4 P + 5 O ---> 2 P2O5
How many atoms does each element have in the reactants of the following chemical equation:
NaOH + H2CO3 ---> Na2CO3 + H2O
Na - 1
O - 4
H - 3
C - 1
Mr. T went to Market Basket with Mr. Ahmed. In the bread aisle, Mr. Ahmed saw Ms. Brokaw they had a conversation about class. Mr. T then got a text that his refrigerator was running, so he abandoned his friends and his cart. Ms. Brokaw and Mr. Ahmed finished their shopping together. What type of reaction is this?
A single replacement reaction.
What does the law of conservation of mass state?
The law of conservation of mass states that matter during a chemical reaction can neither be created nor destroyed.
What is a compound that is only made of carbon and hydrogen called? (HINT: It is related to a combustion reaction)
A hydrocarbon
Balance the following equation:
___NaBr + ____CaF2 ---> ____NaF + ____CaBr2
2 NaBr + CaF2 ---> 2 NaF + CaBr2
What is one reason that we balance chemical equations?
To validate that the Law of Conservation of Mass is true.
CH4 + 2O2 --> ____ + ____
What reaction is this? What are the balanced products of this reaction?
Combustion! CO2 + 2H2O
CH4 + 2O2 --> CO2 + 2H2O