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Name the Compound!
Miscellaneous
Rxn Vocabulary
How to Balance Equations
Balance This!
100
CO2
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
Sn + O2 -> SnO
2 Sn + O2 → 2 SnO
200
H2O
Water (or Dihydrogen Monoxide)
200
This is the force that holds atoms in a compound together. (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
Li + H2O → LiOH + H2
(2) Li + (2) H2O → (2) LiOH + H2
300
CH4 (Hint: Polyatomic)
Methane
300
Twelve grams of reactant X react with fifteen grams of reactant Y. This is the total mass of the product(s).
What is twenty seven grams?
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
MgCl2->Mg+Cl2
Already balanced: MgCl2->Mg+Cl2
400
NH4 (Hint: Polyatomic)
Ammonium
400
Ammonium, Nitrate, and Hydroxide are examples of these.
Polyatomic Ions
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
H2+F2->HF
H2+F2->(2)HF
500
SiFl4
Silicon Tetrafloride
500
Chlorine, Oxygen, and Iodine have this in common.
They are always in pairs. Example: O2, Cl2, etc
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
Your provincial test will want you to be able to explain that this is the common outcome of ALL CHEMICAL REACTIONS.
The same amount of mass that we started with (also, a chemical change will occur)
500
Hydrogen + Oxygen -> Water
H2+02-> H20 therefore, (2)H2+O2->(2)H20