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सी.आई.एस.सी.ई.आईसीएसई ICSE Class 7

What Does the Word ‘Atom’ Mean ?

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प्रश्न

What does the word ‘atom’ mean?

एक शब्द/वाक्यांश उत्तर
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उत्तर

“atom” means‘indivisible”

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अध्याय 4: Atoms, Molecules and Radicals - Additional questions

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सेलिना Concise Chemistry [English] Class 7 ICSE
अध्याय 4 Atoms, Molecules and Radicals
Additional questions | Q 16

संबंधित प्रश्न

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What is radioactivity?


Name two particles found inside the nucleus. What are they collectively called ?


What are orbits or shells ?


Write electronic configuration of oxygen, fluorine, sodium, silicon, argon.


Who originated the word ‘atom’ ?


An atom has 13 protons and 14 neutrons.

What is the atomic number of the atom ?


How is the size of an atom indicated ?


The electronic configuration of an element Z is 2, 8, 8.
(a) What is the atomic number of the element?
(b) State whether element Z is a metal or a non-metal.
(c) What type of ion (if any) will be formed by an atom of element Z? Why?
(d) What is special about the outermost electron shell of the atom of this element?
(e) Give the name and symbol of element Z.
(f) Name the group of elements to which Z belongs.


Which of the following statement is correct about the atom of an element ?


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?


Select the correct answer to the statement given below:

The basic unit of matter is not capable of independent existence.


Select the correct answer to the statement given below:

Imaginary path around the nucleus of an atom in which electrons revolve.


A compound containing one atom of carbon and two atoms of oxygen is ______.


K: Potassium:: C: ______.


Define the following term with an example.

Metal


A change in the physical state can be brought about


The graphite refill used is pencil is made of element called ______.


The ______ are combination of atoms of various elements or the same element.


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


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