: Azhar ul Haque Sario
: Cambridge AS Level Inorganic, Organic, and Analysis Chemistry 9701 2026 and 2027 Exam Study Guide
: Azhar Sario Hungary
: 9783384816528
: 1
: CHF 5.90
:
: Chemie
: English
: 210
: DRM
: PC/MAC/eReader/Tablet
: ePUB

Unlock the secrets of the 2026 and 2027 Cambridge Chemistry exams with a guide


 


This book is your complete roadmap to success. It covers every corner of Inorganic Chemistry. You will master the trends of Period 3. It explains why atomic radii shrink. It details why melting points rise and fall. You will understand the 'hill shape' of properties. It dives deep into Group 2 metals. It explains their solubility trends clearly. It covers the 'salt formers' of Group 17. You will learn about their volatility. It explains bond strengths and anomalies. It details the chemistry of Nitrogen and Sulfur. It explains the environmental impact of oxides. The Organic Chemistry section is massive. It starts with the basics of hydrocarbons. It explains alkanes and cracking methods. It details how alkenes react. You will master electrophilic addition. It covers halogen compounds thoroughly. It explains nucleophilic substitution steps. It details elimination reactions in ethanol. You will understand alcohols inside out. It explains their acidity and oxidation. It covers aldehydes and ketones. It simplifies nucleophilic addition mechanisms. It details carboxylic acids and esters. It explains hydrolysis in acid and alkali. It covers nitrogen compounds like amines. It details nitrile synthesis and reactions. It explains polymerization clearly. It covers the life cycle of plastics. It teaches you organic synthesis strategies. You will learn to design reaction routes. The Analysis section is practical. It covers Infrared Spectroscopy. It explains how to spot functional groups. It covers Mass Spectrometry. It explains fragmentation and isotopes. It teaches you to solve molecular puzzles.


 


This guide provides value where others often fail because it focuses on the 'why' rather than just the 'what.' Most textbooks simply list facts or dry equations, but this book uses 'Deep Dive' sections to explain the hidden logic behind the chemistry. It integrates modern 2026 perspectives, such as the shift toward 'Green Oxidising' and the environmental realities of polymer disposal, giving you a contemporary edge that examiners love. It clarifies specific exam traps, like the 'Sulfur Bump' in melting points or the precise difference between bacterial killing agents in water treatment. It uses simple analogies, like comparing polymer chains to paperclips or visualizing electron clouds, to make difficult concepts stick. It moves beyond rote memorization to build your chemical intuition, teaching you to think like a detective when facing unknown organic structures. It is written specifically for the 2026 and 2027 syllabus, ensuring you are studying exactly what is required without unnecessary fluff. It bridges the gap between theoretical knowledge and practical exam application. It acts as a personal tutor, guiding you through the 'Golden Rule of Curly Arrows' and the specific conditions needed for high yields. It transforms chemistry from a list of rules into a coherent, understandable system.


 


Legal Disclaimer: This book is an independent publication by Azhar ul Haque Sario. It is not affiliated with, endorsed by, or connected to Cambridge Assessment International Education or any other examination board. All trademarks, brand names, and curriculum references are used for nominative fair use purposes only to describe the intended educational context and scope of the work.

Section 1: Inorganic chemistry


 

The Periodic Table: chemical periodicity


 

Periodicity of physical properties of the elements in Period 3


 

Periodicity in Period 3: A Journey Across the Row

 

When we look at the periodic table, we aren't just seeing a grid of letters. We are looking at a rhythmic pattern of behavior. Period 3 is arguably the perfect"testing ground" for understanding chemistry. It takes us all the way from reactive metals like Sodium (Na) on the left, across the solid semiconductor Silicon (Si), to the gaseous noble gas Argon (Ar) on the right.

 

This journey across the period tells us a story about electrons. Specifically, how tightly they are held and what they do when atoms come together.

 

Below is a detailed analysis of the trends in atomic radius, ionic radius, melting point, and electrical conductivity, followed by the structural explanations required for your coursework.

 

1. Atomic Radius: The Shrinking Atoms

 

You might intuitively think that as you add more protons and electrons across a period, the atom gets bigger. In reality, the opposite happens. The atoms actually shrink as we move from left to right.

 

The Trend:

 

Sodium (Na) has the largest atomic radius.

 

Argon (Ar) has the smallest.

 

There is a steady decrease across the period.

 

Why does this happen? It comes down to a tug-of-war between the nucleus and the outer electrons.

 

Nuclear Charge: As we move from Na (atomic number 11) to Ar (atomic number 18), we are adding one proton to the nucleus each time. This increases the positive charge pulling on the electrons.

 

Shielding stays constant: All these elements have their valence electrons in the third shell (n=3). The inner shells (n=1 and n=2) provide the"shielding" or"screening" effect. Since the number of inner shells doesn't change, the shielding remains roughly the same.

 

Result: The increased nuclear charge pulls the outer shell closer to the nucleus because there is no extra shielding to offset it. Therefore, the radius decreases.

 

2. Ionic Radius: The Tale of Two Halves

 

Ionic radius is slightly more complex because we have to look at what happens when these atoms form ions to achieve a stable octet. We see two distinct trends here: one for the positive ions (cations) and one for the negative ions (anions).

 

The Cations (Na+, Mg2+, Al3+):

 

These lose their outer shell electrons completely.

 

The remaining electrons are in the second shell (n=2).

 

Because Al3+ has the most protons pulling on the same number of electrons (isoelectronic series), it is the smallest.

 

Trend: The ionic radius decreases sharply from Na+ to Al3+.

 

The Anions (P3−, S2−, Cl−):

 

Suddenly, the size jumps up massively. This is because these non-metals gain electrons to fill the third shell.

 

They have an extra shell compared to the metal cations.

 

However, within this group of anions, the size still decreases. P3− is the largest, and Cl− is the smaller of the group. This is again due to the increasing nuclear charge pulling the shell tighter.

 

3. Melting Point: The"Hill" Shape

 

If you were to graph the melting points of Period 3, you would draw a shape that looks like a hill or a mountain. It rises, peaks, and then crashes down. This property gives us the biggest clue about the structure of the elements.

 

 

The Trend:

 

Rise (Na→Mg→Al): Melting points increase steadily.

 

The Peak (Si): Silicon has a very high melting point—the highest in the period (depending on data interpretation, sometimes just below Aluminium, but chemically behaves as a giant structure).

 

The Crash (P→S→Cl→Ar): The melting points drop significantly.

 

Note: There is a subtle"bump" here. Sulfur (S) actually has a higher melting point than Phosphorus (P), but Chlorine (Cl) and Argon (Ar) are very low.

 

4. Electrical Conductivity: Conductors to Insulators

 

Conductivity tells us how free the electrons are to move.

 

The Trend:

 

Sodium, Magnesium, Aluminium: High conductivity. Aluminium is the best conductor here.

 

Silicon: Moderate conductivity. It is a semiconductor (metalloid).

 

Phosphorus, Sulfur, Chlorine, Argon: Zero conductivity. They are insulators.

 

5. Explaining the Trends: Structure and Bonding

 

To get the full marks in an AS Level context, describing the trend isn't enough. We must explain why melting point and conductivity vary so drastically. This requires looking at the bonding.

A. The Metals (Na,Mg,Al)

 

Structure: Giant Metallic Lattice.

&n