Chemistry XII Part 1

IELTS structure

IELTS structure The total IELTS test lasts for 2 hours and 45 minutes. The Listening part consists of 40 questions that you have to complete in 30 minutes. The Academic Reading part consists of 40 questions and you have 60 minutes. The Academic Writing part requires that you complete two writing tasks within 60 minutes. The Speaking part takes between 11 and 14 minutes to complete and has three parts. During the speaking part you will have a face-to-face conversation with an examiner. What is the IELTS test? The International English Language Testing System (IELTS) is a British examination which assesses the English language proficiency of people who want to study or work where English is used as the language of communication. Structure and Scoring IELTS has two versions: Academic and General Training. Everybody takes the same Listening and speaking components, but the Reading and Writing components differ. Listening , Reading and ...

Chemistry XII Part 2

Chemistry

Chemistry is the scientific discipline involved with compounds composed of atoms, i.e. elements, and molecules, i.e. combinations of atoms: their composition, structure, properties, behavior and the changes they undergo during a reaction with other compounds. Chemistry addresses topics such as how atoms and molecules interact via chemical bonds to form new chemical compounds. There are four types of chemical bonds: covalent bonds, in which compounds share one or more electron(s); ionic bonds, in which a compound donates one or more electrons to another compound to produce ions: cations and anions; hydrogen bonds; and Van der Waals force bonds. See glossary of chemistry. In the scope of its subject, chemistry occupies an intermediate position between physics and biology. It is sometimes called the central science because it provides a foundation f...

RIGHT WAY

Search This Blog