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प्रश्न
What are the building blocks of matter ?
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उत्तर
Atoms and molecules are the building blocks of matter.
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संबंधित प्रश्न
WRITE SHORT ANSWER
Define an ionic compound.
WRITE SHORT ANSWER
What is radioactivity?
Fill in the blank
An ion with negative charge is called _______
Name the particle or particles you would expect to find in :
The nucleus of an atom
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
Does the particle have an excess of electrons or a deficiency of electrons ?
Compare:
Chlorine atom and chloride ion, with respect to
Atomic structure
Electrical state
Name the gas that.
Turns moist starch iodide paper blue black.
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which element will lose electron?
State the meaning of the term – (a) atom, (b) molecule, (c) radical – with a suitable example.
Select the correct answer to the statement given below:
The basic unit of matter is not capable of independent existence.
A compound containing one atom of carbon and two atoms of oxygen is ______.
Define – Atom.
Draw the structure of an atom and explain the position of the sub-atomic particles.
Define the following term with an example.
Metal
Which of the following statements made by Dalton has not undergone any change?
______ is the smallest particle of an element.
Define the term ions or radicals.
Give the salient features of “Modern atomic theory”.
An atom of Oxygen (O) and two atoms of hydrogen (H.) combine to form a molecule of ______.
