SS2: CHEMISTRY - 1ST TERM
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Periodicity and Periodic Table I | Week 15 Topics|1 Quiz
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Quantum Numbers Orbitals & Electrical Structure | Week 26 Topics|1 Quiz
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Periodicity and Periodic Table II | Week 312 Topics|1 Quiz
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Periodic Table and Atomic Properties
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Melting and Boiling Point
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Electrical and Thermal Conductivities
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Atomic Size [Radius]
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Ionic Size [Radius]
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Atomic Volume
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Ionization Energy
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Electron Affinity
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Electronegativity
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Differences between Ionization Energy and Electron Affinity
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Summary of Trends of Atomic Properties
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Theory Questions - Periodicity and Periodic Table II
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Periodic Table and Atomic Properties
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Periodicity and Periodic Properties III | Week 411 Topics|1 Quiz
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Periodicity and Periodic Properties IV | Week 55 Topics|1 Quiz
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Mass-Volume Relationship in Reaction | Week 68 Topics|1 Quiz
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Types of Reactions: Oxidation and Reduction | Week 7 & 87 Topics|1 Quiz
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Oxidation – Reduction Reaction II | Week 93 Topics|1 Quiz
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Electrode Potential and Electrochemical Cells I | Week 106 Topics|1 Quiz
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Electrode Potential and Electrochemical Cells II | Week 115 Topics|1 Quiz
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Electrolysis I | Week 128 Topics|1 Quiz
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Electrolysis II | Week 138 Topics|1 Quiz
Strong and Weak Electrolytes
Topic Content:
- Strong Electrolytes (strong acids, strong bases, soluble ionic salts)
- Weak Electrolytes (weak acids, weak bases)
Strong Electrolytes:
Strong electrolytes are compounds that disassociate or ionize completely in water or an aqueous solutionA solution in which the solvent is water. is called an aqueous solution. It is mostly shown in chemical equations by appending (aq) to the relevant chemical formula. For example, a... More.
e.g.
(a) strong acids:
(i) HCl(aq) ⇌ H+(aq) + Cl–(aq)
(ii) H2SO4[aq) ⇌ 2H+(aq) + SO42-(aq)
(iii) HNO3(aq) ⇌ H+(aq) + NO3–(aq)
(b) Strong alkalis:
(i) NaOH(aq) ⇌ Na+(aq) + OH–(aq)
(ii) KOH(aq) ⇌ K+(aq) + OH–(aq)
(c) Soluble ionic salts
(i) NaCl(aq) ⇌ Na+(aq) + Cl–(aq)
(ii) CuSO4(aq) ⇌ Cu2+(aq) + SO42-(aq)
Weak Electrolytes:
Weak electrolytes are substances that slightly or partially disassociate in water or aqueous solution.
e.g.
(a) Weak acids:
(i) CH3COOH(aq) ⇌ CH3COO–(aq) + H+(aq)
(ii) H2CO3(aq) ⇌ 2H+ + CO32-(aq)
(iii) H2SO3 ⇌ 2H+ + SO32-(aq)
(b) Weak bases:
(i) NH4OH(aq) ⇌ NH4+(aq) + OH–(aq)
(ii) (Limewater) Ca(OH)2 ⇌ Ca2+(aq) + OH–(aq)