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सी.आई.एस.सी.ई.आईसीएसई ICSE Class 7

Write the Names of the Elements Present in the :- Sulphuric Acid - Chemistry

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प्रश्न

Write the names of the elements present in the :- 

Sulphuric acid

एक पंक्ति में उत्तर

उत्तर

Sulphuric acid : Hydrogen, sulphur, oxygen.

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अध्याय 4: Atoms, Molecules and Radicals - Exercise

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सेलिना Concise Chemistry [English] Class 7 ICSE
अध्याय 4 Atoms, Molecules and Radicals
Exercise | Q 2.3

संबंधित प्रश्न

Fill in the blank

An ion with positive charge is called ______


Define: Chemical bond


What does an atom consist of ? Explain.


An atom has 13 protons and 14 neutrons.

How many electrons would be present in this atom ?


Fill in the blank

If an atom gains an electron, it is called an _______


Is it possible to see atoms these days ? Explain your answer.


How many atoms are there in exactly 12 g of carbon-12 element ? (C = 12 u)


Give scientific reason.

All the mass of an atom is concentrated in the nucleus.


Compare: 

Chlorine atom and chloride ion, with respect to

Atomic structure
Electrical state


Elements X and Y have 1 and 7 electrons in their outermost shell respectively.

Which element will gain electron?


Elements X and Y have 1 and 7 electrons in their outermost shell respectively.

Which will form positive ion?


Elements X and Y have 1 and 7 electrons in their outermost shell respectively.

What will be the charge present of the molecule XY after chemical combination?


The smaller particles found in the atom is called ______.


Define – Atom.


Name the sub-atomic particles.


Project.

To have an idea of what atoms are, students can be asked to construct atoms using pipe cleaners (thin metal wires-electron shells), pompoms (balls-different colours for protons and neutrons) and beads (electrons). Students will love and enjoy putting them together and they look great hanging from the ceiling in the classroom.


In the nucleus of `""_20"Ca"^40`, there are ______


A change in the physical state can be brought about


The first scientific theory about atoms was given by J J. Thomson.


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