Advertisements
Advertisements
प्रश्न
What are the building blocks of matter ?
Advertisements
उत्तर
Atoms and molecules are the building blocks of matter.
APPEARS IN
संबंधित प्रश्न
TRUE \ FALSE
Cathode rays are a stream of fast moving particles that travel in random directions.
WRITE SHORT ANSWER
Name three inert gases.
Write the names of the elements present in the:-
Acetic acid
Write the names of `"Ca"("NO"_3)_2` compounds :
Write the names of `"Na"_3"PO"_4` compounds :
An atom has 13 protons and 14 neutrons.
What is the atomic number of the atom ?
Define: An Atom:
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is such a particle called ?
Fill in the blank
A charged particle is called an _____
Fill in the blank
An _______ is electrically neutral.
Name the three subatomic particles present in an atom.
Why is it not possible to see an atom even with the most powerful microscope ?
Give scientific reason.
All the mass of an atom is concentrated in the nucleus.
Elements X and Y have 1 and 7 electrons in their outermost shell respectively.
Which element will lose electron?
A radical take part – unsplit in a chemical reaction and retains its identity in reactions.
With reference to the radical –
- ammonium
- bisulphate
- carbonate
state the group of atoms present in each radical.
The electronic structure [configuration] of fluorine can be written as 2, 7. In a similar way give the electronic configuration of aluminium
The electronic structure [configuration] of fluorine can be written as 2, 7. In a similar way give the electronic configuration of phosphorus
The smallest particle of matter that can exist by itself is ______.
Define the following term with an example.
Element
What is the fundamental particle of an element?
