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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.
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Solution
Do it yourself.
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RELATED QUESTIONS
The average atomic mass of a sample of an element X is 16.2 u. What are the percentages of isotopes `""_8^16X" and """_8^18X` in the sample?
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 |
WRITE SHORT ANSWER
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Ammonia
Write the names of `("NH"_4)_2"SO"_4` compounds:
Write the names of `"FeS"` compounds :
Give the charge and the mass of an electron, proton and neutron present in an atom ?
Write electronic configuration of oxygen, fluorine, sodium, silicon, argon.
Write the full form of IUPAC.
Why is it not possible to see an atom even with the most powerful microscope ?
For the symbols H, D and T, write the subatomic particles (protons, neutrons and electrons) found in each one of them.
Define the following term:
Atom
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.
A compound containing one atom of carbon and two atoms of oxygen is ______.
The basic unit of matter is ______.
Name the sub-atomic particles.
An element is composed of ______ atoms.
Atoms of one element can be transmuted into atoms of other elements by ______
Atomic models have been improved over the years. Arrange the following atomic models in the order of their chronological order
- Rutherford’s atomic model
- Thomson’s atomic model
- Bohr’s atomic model
