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Question
Select the correct answer to the statement given below:
The basic unit of matter is not capable of independent existence.
Options
Molecule
Orbits
Atom
Valency
Radical
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Solution
Atom
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RELATED QUESTIONS
MATCH THE COLUMNAS
| 1. Jpham Dalton | a. Neutrons |
| 2. Atom | b. Model of the atom |
| 3. Chadwick | c.The atomic theory of matter |
| 4. Rutherfrod | d. Positively charged |
| 5. Protons | e. Electricity neutral |
| 6. Nuclear fusion | f. Generator of electricity |
| 7.Gamma -rays | g. High penetrating power |
| h.Energy in sun |
Define:- Atom
Write the names of the elements present in the :-
Sulphuric acid
Write the names of the elements present in the:-
Sodium hydroxide
Define: Relative atomic mass
What does an atom consist of ? Explain.
An atom has 13 protons and 14 neutrons.
What is the atomic number of the atom ?
Fill in the blank
A charged particle is called an _____
Name the three subatomic particles present in an atom.
How is the size of an atom indicated ?
What value has been given to the mass of this reference atom ?
Find the mass of 2 moles of nitrogen atoms.
Draw the electron dot structure of this compound.
Select the correct answer to the statement given below:
The smallest particle of a substance – capable of independent existence and which retains the characteristics of the substance.
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.
1 mole of Gold and Silver contain same number of atoms.
Which of the following has maximum number of atoms?
______ is a substance that is made up of three oxygen atoms chemically combined.
Atoms have a radius of the order ______.
