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Within each set of questions. users can take a random quiz or choose a specific topic on which to focus. Quizzes consist of multiple choice questions with four possible answers. After answering each question the user is given in-depth explanations of the answer and links to further reading.
Download as PDF; Printable version ... This article needs attention from an expert in chemistry. ... "First 25 of 125 big questions that face scientific inquiry over ...
Triple Award Science, commonly referred to as Triple Science, results in three separate GCSEs in Biology, Chemistry and Physics and provide the broadest coverage of the main three science subjects. The qualifications are offered by the five main awarding bodies in England; AQA , Edexcel , OCR , CIE and Eduqas .
A mnemonic is a memory aid used to improve long-term memory and make the process of consolidation easier. Many chemistry aspects, rules, names of compounds, sequences of elements, their reactivity, etc., can be easily and efficiently memorized with the help of mnemonics.
The GCSE combined science A exam is made up of six papers (each one hour and ten minutes): two each for biology, chemistry and physics respectively. In combined science B, the science curriculum is delivered in four parts: biology, chemistry, physics and combined science.
The website was founded in 2015 by Leon Hady, a former UK headteacher. Tuitionkit started as a self-funded venture allowing students to view interactive video content to support revision in Maths, English and Science for GCSE and A Levels. As of November 2016 it has 20,000 users. [6] [7] [8] [5]
In chemistry, the mass fraction of a substance within a mixture is the ratio (alternatively denoted ) of the mass of that substance to the total mass of the mixture. [1] Expressed as a formula, the mass fraction is:
Equilibrium chemistry is concerned with systems in chemical equilibrium.The unifying principle is that the free energy of a system at equilibrium is the minimum possible, so that the slope of the free energy with respect to the reaction coordinate is zero.