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States of matter describe the physical forms in which substances exist. The main states are solid, liquid, gas, and plasma, each with unique properties based on particle arrangement and energy levels. Understanding states of matter is essential in science and daily life. From water changing forms to gases in the air, these concepts explain natural

Chemistry is the study of matter, how it changes, and how different substances interact. It explains everything from why metals rust to how medicines work. Chemistry is called the “central science” because it connects physics, biology, and earth sciences. Scientists use Chemistry to develop new materials, medicines, and energy sources. This guide will explore the

Electron configuration shows how electrons arrange themselves in an atom. It helps explain chemical properties, reactivity, and periodic table trends. Elements with full outer shells are stable, while others react to achieve stability. This concept helps predict how elements bond and form compounds. Understanding electron configuration is key to learning how atoms behave in chemistry

Hydrocarbons are organic compounds made up of carbon and hydrogen atoms. They are classified into alkanes, alkenes, and alkynes, based on the types of bonds between carbon atoms. Understanding these hydrocarbons is essential in organic chemistry, as they form the basis of fuels, plastics, and many industrial chemicals. Alkanes Alkanes are saturated hydrocarbons because they

Every atom forms the building blocks of all matter, making atomic structure one of the most fundamental concepts in Chemistry. The periodic table organises all chemical elements based on their atomic number and mass number, allowing scientists to predict chemical properties and reactions. The atomic structure of an element determines how it behaves in chemical

Acids, bases, and salts are essential substances in chemistry, influencing many aspects of day-to-day life. From the sour taste of citrus fruits like lemons and oranges to the bitter taste of household cleaners, these compounds play a key role in science, industry, and even cooking. In chemistry, an acid is defined as a substance that

A-Level Chemistry is one of the hardest subjects students can take, requiring a strong understanding of chemical bonding, states of matter, and chemical reactions. Whether studying under AQA, OCR, or Edexcel, success depends on effective preparation and using the right revision strategies. Many students struggle with math-based concepts, practical skills, and definitions and formulas, making