Molecule
Molecule
Molecules: The smallest particle of an element or compound which is capable of independent existence and shows all the properties of that substance is called a molecule. In general, molecule is a group of two or more atoms that are chemically bonded together. Atoms of the same element or of different elements can join together to form molecules.
Molecules can be divided into two categories:
Elementary Molecules
Molecules of Elements: The molecules of an element contain same type of atoms. Molecules of many elements are made up of one atom of that element.
Illustration: Noble gases like argon , helium
etc.
The molecules of most of the non-metals are made up of more than one atom.
Illustration: A molecule of oxygen consists of two atoms of oxygen and is known as diatomic molecule, Ozone
consists of three atoms of oxygen.
Compound Molecules
Molecules of Compounds: Atoms of different elements join together in definite proportions to form molecules of compounds.
E.g. molecule is made up of hydrogen and oxygen elements in the ratio of 1:8 by mass.
Prediction of Number of Atoms from Mass Ratio: In order to predict the number of atoms from mass ratio, divide the given mass of each element by the atomic mass of the element and calculate the simplest ratio between the obtained moles.
Example: We know that mass ratio of nitrogen and hydrogen in ammonia molecule is 14: 3. As we can see in the picture ammonia molecule is consists fo one N and three H-atoms are present hence, the formula of ammonia is .
A compound is formed by the combination of atom of at least ______________ element. | |||
| Right Option : D | |||
| View Explanation | |||
Which of the following is the Molecule of element ? | |||
| Right Option : B | |||
| View Explanation | |||
Which of the following is a molecule having single atom ? | |||
| Right Option : D | |||
| View Explanation | |||
Students / Parents Reviews [10]
One of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
Aman Kumar Shrivastava
10thMy experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
Hiya Gupta
8thAbout Abhyas metholodology the teachers are very nice and hardworking toward students.The Centre Head Mrs Anu Sethi is also a brilliant teacher.Abhyas has taught me how to overcome problems and has always taken my doubts and suppoeted me.
Shreya Shrivastava
8thMy experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.
Shivam Rana
7thMy experience was very good with Abhyas academy. I am studying here from 6th class and I am satisfied by its results in my life. I improved a lot here ahead of school syllabus.
Ayan Ghosh
8thIt was a good experience with Abhyas Academy. I even faced problems in starting but slowly and steadily overcomed. Especially reasoning classes helped me a lot.
Cheshta
10thAbhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
Om Umang
10thA marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.
Archit Segal
7thBeing a parent, I saw my daughter improvement in her studies by seeing a good result in all day to day compititive exam TMO, NSO, IEO etc and as well as studies. I have got a fruitful result from my daughter.
Prisha Gupta
8thAbhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
