The Balancing Act
Mass cannot be created or destroyed.
What is the the law of conservation of mass?
Name this type of chemical reaction.
A+B=AB
What is a synthesis reaction? (combination)
The substance left from a reaction.
What is a product?
The burning of wood to make fire is an example of this reaction.
What is a Combustion Reaction?
When balancing chemical equations, the only thing you can modify is the coefficients. True or False?
True
A candle is lit. What chemical reaction is taking place?
What is a combustion reaction?
A substance made up of two or more elements.
What is a compound?
What are the signs of a chemical reaction?
-Color change
-Formation of a precipitate
-Formation of a gas
-Odor change
-Temperature change
If the number of atoms on the reactant side differs from the number on the product side, is the equation balanced? (Yes or No)
Yes.
Name the chemical reaction.
A+BC=B+AC
What is a single-displacement reactions?
These elements can exist in pairs.
H.O.N.Cl.Br.I.F.
In order to prove that an equation is balanced hypothetically masses must be equal when calculated. True or False?
True
It takes 2 Graham Crackers, 1 marshmallow and 2 pieces of chocolate to make a s'more. You have 12 graham crackers 7 marshmallows and 8 chocolate. Which substance is the limiting reactant?
The chocolate.
Name the 5 types of chemical reactions.
Synthesis, Combustion, Single-replacement, Double-replacement, and Decomposition.
Determines the amount of product that is formed.
What is a Limiting Reactant?
What does the coefficient in a chemical equation represent?
The amount of moles in an Element or Substance.
Balance the equation.
_FeCl3+_MgO-->_Fe2O3+_MgCL2
2FeCl3+3MgO--->Fe2O3+3MgCl2
Which of the following is a decomposition reaction?
A.)2NaCl(s)-->2Na(s)+Cl2(g)
B.)H2O+SO3-->H2SO4
C.)2Al+3CuCl2-->2AlCl3+3Cu
A.)
6.022140857 × 1023.
What is Avogadro's number?
DOUBLE JEOPARDY!
A famous chemist was found dead today, police concluded there was foul play. It was a two man job and there are four suspects- Felice, Maxwell,Nicolas, and Xavier. The only thing found were two sets of numbers. 26-3-58 and 28-27-57-16. Who were the killers.
Felice and Nicolas were the killers. The numbers correspond to atomic numbers on the periodic table. Fe-Li-Ce and Ni-Co-La-S.