Chemical Reactions
In a chemical reaction the substances to the right of the arrow are called this/these?
What is/are products?
In the formula 5CaSO4, this is the number of oxygen atoms.
What is 20?
A substance that enters a chemical reaction is called this.
What is a reactant?
A metal and non-metal form this type of compound.
What is an ionic compound?
This was an element that gained electrons and now has a negative charge.
What is an anion?
What is Avogadro's number and unit?
6.02(2)*10^23 particles/atoms/molecules (need a unit here!)
What is something that speeds up a reaction but is not used up?
What is catalyst?
What type of reaction has the generic formula
A + B -> AB
What is a synthesis reaction?
This type of reaction occurs when an element displaces another element in a compound, producing a new compound and a new element.
What is a single displacement reaction?
Breaking down the chemical composition. Often times more products than reactants.
What is a decomposition reaction?
A molecule consisting of two atoms. Ex: O2 or H2
What is diatomic?
What is the name of the process we use to get from one type of unit to another?
Dimensional analysis
1. Word equations
2. Skeleton equations
3. Balanced word equations
What are 3 ways in which chemical equations can be represented?
Balance the following chemical reaction:
H2 + NaCl --> HCl + Na
H2 + 2NaCl --> 2HCl + Na
An expression in which symbols and formulas are used to represent a chemical reaction. EG: H2 + O2 -> H20
A chemical equation
What substances are separted into free dissociated ions in a complete ionic equation?
aqueous compounds
State the Law of Conservation of Mass.
What is that matter can not be created or destroyed in a chemical reaction?
What is one of the tools we use when going from one unit to another? Also, include one example
Conversion factors! 1 dozen/12 roses. 1 mole/Avogadro's number. 22.4 L/mol.
When balancing an equation, these numbers can not be changed.
What is a subscript?
A solid that forms from a solution during a chemical reaction.
a precipitate
What is eliminated from the complete ionic equation to write the net ionic equation?
What is spectator ions?
The reaction 2HgO ---> 2Hg + O is an example of this type of reaction.
What is decomposition?
AgNO3(aq) + NaCl(aq) -> AgCl(s) + NaNO3(aq)
is an example of this type of reaction.What is an example of a double displacement reaction?
How many atoms are present in 4.67 mol of Radon?
2.81*10^24 atoms of Radon (Always units, Sig Fig, Sci notation!)
Give three examples that a chemical change has taken place.
What is temp. change, color change, odor change, formation of a precipitate, formation of a gas?
ammonia + hydrogen chloride -> ammonium chloride
... is an example of this type of reaction.
What is a synthesis reaction?
A reaction in which a substance reacts with oxygen gas, releasing energy in the form of light and heat
What is a Combustion Reaction?
Balance the reaction: Na + H2O --> NaOH + H2
What is 2Na + 2H2O --> 2NaOH + H2
A precipitate often forms in these types of reactions.
What is a double displacement reaction?
What is molar mass of Carbon?
12