Chemistry is the study of changes that take place with matter. Every student is skilled differently and only an experienced tutor recognizes the ability and brings out the best of a student.
How to Solve Chemistry ProblemsBack to Top
Our tutors help you write a report by providing you complete necessary explanation and help you decide what to include in various parts of the report. Problem solving is a skill which is not explicitly taught during lectures. The best way to master how to solve chemistry problems is to practice the problems you have answers to.
Few steps you can follow before solving Chemistry problems are:
1) Make a note of the chemical concepts denoted in the problem
2) List the known values and represent them with appropriate symbols
3) Define the unknown and use appropriate symbol to represent them with symbols
4) Write down the equations required to solve the problem
5) Apply the known values in the equation and solve for the sameIn order to solve chemistry problems and compute to find the right equation. One must always make a note of clear and concise record and important terms to review them quickly before attending an examination. Understand and be thorough with chemical names so as to identify them and avoid mistakes during an examination. At any time if you’re confused ensure that you ask your tutor immediately and solve the query without proceeding further. Don't be afraid to ask for help. In that way Chemistry can both be fun and challenging.
Chemistry Practice ProblemsBack to Top
1) Oxygen O2
2) Carbon Dioxide CO2
3) Hydrogen H2
4) Water H2O
5) Nitrogen N2
6) Ammonia NH3
7) Methane CH4
8) Sulphur Dioxide SO2
9) Sodium Chloride NaCl
10) Hydrochloric Acid HCl
11) Sodium Hydroxide NaOH
12) Magnesium Oxide MgOExercise 1: Balance the Chemical Equation below by writing it in word equations:
1) Sodium phosphate and calcium chloride react to form calcium phosphate and sodium chloride.
Answer: 2 Na3PO4 + 3 CaCl2 → 6 NaCl + Ca3(PO4)2
2) Hydrogen gas and nitrogen monoxide react to form water and nitrogen gas.
Answer: 2 H2 + 2 NO → 2 H2O + N2
3) Zinc and lead (II) nitrate react to form zinc nitrate and lead.
Answer: Zn + Pb(NO3)2 → Zn(NO3)2 + Pb
Exercise 2: Balance the Chemical Equations from the below problems:
1) ____ H2SO4 + ____ NaNO2 → ____ HNO2 + ____ Na2SO4
Answer: 1 H2SO4 + 2 NaNO2 → 2 HNO2 + 1 Na2SO4
2) ____ CO2 + ____ H2O → ____ C6H12O6 + ____O2
Answer: 6 CO2 + 6 H2O → 1 C6H12O6 + 6 O2
3) ____ HCl + ____ CaCO3 → ____ CaCl2 + ____H2O + ____ CO2
Answer: 2 HCl + 1 CaCO3 → 1 CaCl2 + 1 H2O + 1 CO2
4) ____ NaCl + ____ F2 → ____ NaF + ____ Cl2
Answer: 2 NaCl + 1 F2 → 2 NaF + 1 Cl2
5) ____ C3H8 + ____ O2 → ____ CO2 + ____ H2O
Answer: 1 C3H8 + 5 O2 → 3 CO2 + 4 H2O