Advertisements
Advertisements
Question
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.
Solution
Do it yourself.
APPEARS IN
RELATED QUESTIONS
Define:- Molecule
Write the names of the elements present in the:-
Ammonia
Write the names of the elements present in the:-
Glucose
Define: Relative atomic mass
What does an atom consist of ? Explain.
Name three non-metals/radicals which have valency -1, -2, and -3.
How did Neils Bohr visualise the atom ?
A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.
What is the charge on the particle ?
Fill in the blank
If an atom loses an electron, it acquires ______ a charge.
What are the building blocks of matter ?
How is the size of an atom indicated ?
Write the relation between nanometre and metre.
Is it possible to see atoms these days ? Explain your answer.
State two observations which show that atom is not indivisible.
What is an atom ? How do atoms usually exist ?
The electron shell ______ is nearest to the nucleus.
Draw diagrams representing the atomic structures of the following:
- Sodium atom
- Chlorine ion
- Carbon atom
- Oxygen ion
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.
The electronic structure [configuration] of fluorine can be written as 2, 7. In a similar way give the electronic configuration of aluminium
A compound containing one atom of carbon and two atoms of oxygen is ______.
Rewrite the given sentence in correct form.
Elements contain two or more kind of atoms and compounds contain only one kind of atom.
An atom of an element has no electron. Will that atom have any mass or not? Can an atom exist without electron? If so then give example.
The volume occupied by 4.4 g of CO2 at S.T.P ______
The volume occupied by 1 mole of a diatomic gas at S.T.P is ______
Write any two observations which support the fact that atoms are divisible.
The graphite refill used is pencil is made of element called ______.
What is the fundamental particle of an element?
