SCH4U First Day Review

NOTE”: You do not need to answer these questions in the order that they appear. You may wish to re-arrange them.

UNIT I – Matter and Bonding

  1. What are 4 of the 5 contributions of Dalton to atomic theory?
  2. What are the 3 fundamental components of the atom?
  3. Name the following : a) Ba2S (b) CaF2 (c) NH3 (d) Al2O3 (e) LiCl (f) NaNO32H2O

UNIT II – Chemical Reactions

  1. A hydrocarbon is burned with limited oxygen. Black smoke arises and a poisonous gas is made. Provide a balanced chemical reaction for this process if the hydrocarbon is C4H10. Is this complete combustion or incomplete combustion?
  2. Determine the products of the following double displacement reactions. For each reaction, provide the states of the products.

a)LiCl (aq) + CuNO3 (aq) 

b)NH4OH (aq) + AuCH3COO (aq) 

c)lead (IV) acetate + potassium chloride 

d)calcium iodide + mercury (I) sulfate 

  1. Determine the products of the following single displacement reactions, then balance each equation

a)Li (s) + Mg(NO3)2 (aq) (b)Zn (s) + Pb(CH3COO)4 (aq) 

c)Sn(NO3)2 (aq) + Ba (s) (d)Gold (III) nitrate + Cu (s) 

e)iron (III) chloride + bromine vapour 

f)chlorine gas + sodium iodide 

  1. Determine each of the following as synthesis, decomposition, single displacement, double displacement or complete combustion:

a)NaCl + H2O  NaOH + HClf)Na2S + H2 H2S + Na

b)C2H6 + O2 CO2 + H2Og)C5H12 + O2 CO2 + H2O

c)H2O  H2 + O2h)AgBr + Al2S3  Ag2S + AlBr3

d)Fe2O3 + Cu  CuO + Fei)HNO3 + KCl  KNO3 + KNO3

e)FeCl3 + O2 Fe2O3 + Cl2j)Ca + C + O2 CaCO3

UNIT III – Quantities in Chemical Reactions

  1. Describe the mole concept in your own words.
  2. If 9.10 g of SO2 and 5.56 g of O2 gas are reacted, which is the limiting reagent and how much SO3 would be produced if it were an addition reaction?
  3. 5.00 g of silver nitrate is placed in an excess of sodium bromide. If 5.03 g of silver bromide is obtained, what is the percentage yield of the product?

UNIT IV – Solutions and Solubility

  1. Differentiate between the following:

a)heterogeneous and homogeneous(b) unsaturated, saturated and supersaturated solution

c)acid, base and neutral solution(d) intermolecular and intramolecular forces

  1. Explain why water is considered the universal solvent.
  2. A 4.50 M solution of HNO3 is diluted to 0.150 M if the volume is made to be 1.00 L by adding water. What is the original volume of nitric acid needed?
  3. List 4 strong acids and 4 strong bases with formula and name.
  4. Explain how to dilute 10.0 M nitric acid into 500.0 mL of 0.250 M nitric acid solution. Be as specific as possible for the calculation and the lab process.

UNIT V – Gases

  1. Describe KMT in your own words.
  2. What are the conditions required for an ideal gas?
  3. What are the conditions for typically reported chemical reactions?
  4. In the complete combustion of hexane, 450 mL of the hydrocarbon is reacted with oxygen. How much oxygen is required to exactly burn all of the C6H14? How much water is made in L?

Other Important Chemistry

  1. What does 'HOBr FINCl' represent for chemists?
  2. What does the 'HONC' rule represent?
  3. What does the term 'organic' mean in regards to chemistry?
  4. When is 'Mole day'?