This type of reaction is where a hydrocarbon burns or explodes in the presence of oxygen, creating as a product carbon dioxide and water vapor.
What is combustion?
100
By definition, the Law of Conservation of Mass states that matter (mass) may not be __________ nor _________ .
What is created / destroyed.
100
This is found on the left side of the yields sign. In other words, what goes in to the reaction.
What is the reactant?
100
This is the first step in balancing any chemical equation.
What is to list and count the elements present on each side of the arrow?
100
____ CH4 + ____ O2 → ____ CO2 + ____ H2O
___ CH4 + _2__ O2 → ____ CO2 + __2__ H2O
200
This type of rxn is where one compound breaks down into two or more simpler elements or compounds.
What is decomposition?
200
This is the attractive force that holds atoms together in a compound. (Hint: think small!!!)
What is chemical BOND?
200
This sign indicates the direction of the reaction, and separates reactants from products.
What is the yields sign OR the arrow?
200
When balancing a chemical equation, you are able to add or change these.
What are coefficients?
200
FeBr3 + H2SO4 --> Fe2(SO4)3 + HBr
2 FeBr3 + 3 H2SO4 --> Fe2(SO4)3 + 6 HBr
300
This type of rxn is where two elements chemically combine to form one new compound.
What is synthesis?
300
The triangle above the yield arrow indicates this
What is heat?
300
This is found on the POINTY side of the arrow. It is the end result of a chemical reaction.
What is the product?
300
Within a chemical formula, if you don't see a subscript, you can deduce that there are this many atoms of that element within each molecule.
What is one?
300
C4H6O3 + H2O → C2H4O2
C4H6O3 + H2O → 2 C2H4O2
400
This type of rxn usually results in the formation of a precipitate. It is where one metal swaps his nonmetal with another metal's nonmetal.
What is double replacement?
400
Arrows that point in both directions indicate this type of reaction.
Reversible Reaction
400
This best explains the definition of the term coefficient.
What is the number of molecules of a given substance?
400
Once the number of atoms of each element balances on each side of the yields sign, this is the final step in balancing all equations.
What is to simplify the equation?
400
C5H8O2 + NaH+ HCl → C5H12O2 + NaCl
C5H8O2 + 2 NaH+ 2 HCl → C5H12O2 + 2 NaCl
500
This type of rxn is where a more reactive element replaces a less reactive element in a compound. In analogy, it is where one element steals another element's girl, sending him home alone.
What is single replacement?
500
This is a way to speed chemical reactions.
Catalyst
500
This best explains the term subscript.
What is the small number that denotes the number of atoms of each element within a compound?
500
These are the five indicators of a chemical reaction. We talked about them yesterday.