Defining
Define a reactant.
Ingredient: what is used in a chemical rxn
What does the arrow 🡪 mean in a chemical reaction?
Yields; produces
2Na + Cl2 🡪 2NaCl is an example of which type of reaction?
Synthesis
Balance:
H2O 🡪 H2 + O2
2H2O 🡪 2H2 + O2
Complete and balance this synthesis reaction: K + Cl2 🡪
2K + Cl2 🡪 2KCl
Define the law of conservation of mass.
Matter cannot be created or destroyed – it only changes form.
Identify the reactants in the following reaction:
2AlBr3 + 3MgCl2 🡪 2AlCl3 + 3MgBr2
AlBr3 and MgCl2
The general equation A + BC 🡪 B + AC represents which type of equation?
Single Replacement
Pb(OH)2 + HCl 🡪 H2O + PbCl2
Pb(OH)2 + 2HCl 🡪 2H2O + PbCl2
Complete and balance this decomposition reaction: AgBr 🡪
2AgBr 🡪 2Ag + Br2
Define chemical reaction.
The process by which substances collide with enough energy that new bonds are formed, thus creating new substances.
Write how gaseous nitrogen trihydride would look in a chemical equation.
NH3 (g)
The process of digestion, or the breakdown of the food you eat, is most likely which type of reaction?
Decomposition
P + O2 🡪 P2O5
4P + 5O2 🡪 2P2O5
Complete and balance the following single reaction: LiI + Cl2 🡪 LiCl + I2
2LiI + Cl2 🡪 2LiCl + I2
Define aqueous.
Dissolved in water
Write the chemical equation for the following reaction: Iron (III) chloride reacts with magnesium hydroxide to produce iron (III) hydroxide and magnesium chloride.
FeCl3 + Mg(OH)2 🡪 Fe(OH)3 + MgCl2
AgNO3 + NaCl 🡪 AgCl + NaNO3 is an example of which type of reaction?
Double Replacement
C3H8 + O2 🡪 CO2 + H2O
C3H8 + 5O2 🡪 3CO2 + 4H2O
Complete and balance the following combustion reaction: CH4 + O2 🡪
CH4 + 2O2 🡪 CO2 + 2H2O
Define precipitate.
An insoluble solid that often suddenly appears as a product when two aqueous ionic compounds react.
Write the chemical equation for the following reaction:
Solid sodium reacts with liquid water to produce aqueous sodium hydroxide and hydrogen gas.
Na(s) + H2O(l) 🡪 NaOH(aq) + H2(g)
This type of reaction can result in the formation of a precipitate.
Double Replacement
Na2O + CO2 + H2O 🡪 NaHCO3
Na2O + 2CO2 + H2O 🡪 2NaHCO3
Complete and balance this double replacement reaction: Al(OH)3 + Mg3(PO4)2 🡪
2Al(OH)3 + Mg3(PO4)2 🡪 2AlPO4 + 3Mg(OH)2