Pure Substances
Pure Substances
Matter can be broadly classified into two major groups " Pure" and "Impure". In chemistry, a pure substance is the one which is made of only one type of constituent particles. On the basis of purity all matter can be classified into two types :- Pure substance and Mixture.
Pure Substance:
A substance is called pure when it contains molecules of only one kind. Each particle of the substance has the same unique property. For example; distilled water is pure water as each drop of it contains nothing but water. In chemistry when we say a substance is pure, it means that the substance is made up of only one type of constituent particles. A pure substance consists of a single type of particles. In other words, a substance is a pure single form of matter.
A pure substance has a constant composition. Water, for example, is always 88.81% oxygen by weight. Pure substances also have constant chemical and physical properties. Foe eg:- Water freezes at exactly and boils at exactly
at atmospheric pressure. This shows that composition and properties of a pure substance are the same regardless of where it is found.
Which of the following is a pure substance ? (a) Salt (b) Sugar | |||
| Right Option : C | |||
| View Explanation | |||
Which of the following is a pure substance? | |||
| Right Option : A | |||
| View Explanation | |||
_____________ of the following is not a pure substance. | |||
| Right Option : D | |||
| View Explanation | |||
Students / Parents Reviews [10]
About 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
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
10thOne 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 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
8thI have spent a wonderful time in Abhyas academy. It has made my reasoning more apt, English more stronger and Maths an interesting subject for me. It has given me a habbit of self studying
Yatharthi Sharma
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
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
7thA 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
8thIt has a great methodology. Students here can get analysis to their test quickly.We can learn easily through PPTs and the testing methods are good. We know that where we have to practice
