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प्रश्न
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.
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उत्तर
Do it yourself.
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संबंधित प्रश्न
Define:- Molecule
Define: Mass number
Define: Covalent bond
An atom has 13 protons and 14 neutrons.
What is the atomic number of the atom ?
Fill in the blank
If an atom gains an electron, it is called an _______
Fill in the blank
If an atom loses an electron, it acquires ______ a charge.
Fill in the blank
A charged particle is called an _____
Fill in the blank
An excess of electrons produces a ________ charge.
Is it possible to see atoms these days ? Explain your answer.
For the symbols H, D and T, write the subatomic particles (protons, neutrons and electrons) found in each one of them.
Give brief information of three subatomic particles with reference to electrical charge, mass and location.
Match the pairs.
| Group 'A' | Group 'B' |
| a. Proton | i. Negatively charged |
| b. Electron | ii. Neutral |
| c. Neutron | iii. Positively charged |
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?
Select the correct answer to the statement given below:
The basic unit of matter is not capable of independent existence.
Draw the structure of an atom and explain the position of the sub-atomic particles.
Define the following term with an example.
Compound
The volume occupied by 4.4 g of CO2 at S.T.P ______
1 mole of Gold and Silver contain same number of atoms.
A change in the physical state can be brought about
