Chemical Reactions
Name two ways to slow down a chemical reaction.
Decrease temperature, smaller surface area, lower concentration, less/no stirring, no catalyst added
What is molar mass?
The mass of one mole of a substance
_____ H2 + _____ O2 🡪 _____H2O
2 H2 + 1 O2 🡪 2 H2O
How many oxygen atoms are there in potassium oxide?
1 [K2O]
A state in which the forward and reverse paths of a change take place at the same rate.
Equilibrium
What is Le Chatelier’s Principle?
When a change is introduced to a system in equilibrium, the reaction shifts in the direction that relieves the change.
What is the molar mass of Magnesium chloride?
94 g/mol
_____Na + _____ H2O 🡪 _____ NaOH + _____ H2
2 Na + 2 H2O 🡪 2 NaOH + 1 H2
How many oxygen atoms are found in Cobalt (II) silicate?
4 [Co2SiO4]
The rate at which reactants change into products over time.
Reaction rate
A chemical reaction where products and reactants are exchanged equally is said to be at _____________.
Equilibrium
How many grams are in 2 moles of LiF?
52 grams
_____ P4 + _____ O2 🡪 _____ P2O2
1 P4 + 5 O2 🡪 2 P2O5
How many oxygen atoms are found in Hydronium phosphite?
6 [(H3O)3PO3]
A reaction that leads to the chemical transformation of one set of substances to another
Chemical Reaction
Give three ways to speed up a chemical reaction.
Higher concentration, larger surface area, more stirring, introduce a catalyst, increase temperature
How many moles are in 425.2 grams of Calcium chloride?
3.87 moles
_____ Al + _____ FeO 🡪 _____ Al2O3 + _____ Fe
2 Al + 3 FeO 🡪 1 Al2O3 + 3 Fe
How many Carbon atoms are there in Gallium tartrate?
12 [Ga2(C4H4O6)3]
The new substances that are formed as a result of a chemical reaction
Products
What are the five types of chemical reactions?
Combustion, Synthesis, Decomposition, Single Replacement, Double Replacement
How many atoms are in 1 mol of sodium?
6.02 x 1023 atoms
_____CO2 + _____ H2O 🡪 _____ C6H12O6 + _____ O2
6 CO2 + 6 H2O 🡪 1 C6H12O6 + 6 O2
List the total number of atoms of each element in Strontium phosphate.
Sr3(PO4)2]
3 Strontium
2 Phosphorus
8 Oxygen
Three types of evidence of a chemical reactions
Change in color, Production of gas, Formation of a precipitate