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Question
State true or false. If false, correct the statement.
The basic unit of an element is molecule.
Options
True
False
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Solution
False
Correct statement: The basic unit of an element is atom.
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RELATED QUESTIONS
Why is it not possible to see an atom with naked eyes?
If bromine atom is available in the form of, say, two isotopes `""_35^79Br (49.7%)" and """_35^81Br (50.3%)`, calculate the average atomic mass of bromine atom.
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 |
TRUE \ FALSE
Neils Bohr gave the theory to explain the arrangement of protons in an atom.
WRITE SHORT ANSWER
Define an ionic compound.
Define: Chemical bond
Define: Mass number
Define: Relative atomic mass
What does an atom consist of ? Explain.
Fill in the blank
If an atom loses an electron, it acquires ______ a charge.
Fill in the blank
A charged particle is called an _____
Compare:
Chlorine atom and chloride ion, with respect to
Atomic structure
Electrical state
Rewrite the given sentence in correct form.
Elements contain two or more kind of atoms and compounds contain only one kind of atom.
State true or false. If false, correct the statement.
An atom is electrically neutral.
Name the sub-atomic particles.
Define the following term with an example.
Metal
In the nucleus of `""_20"Ca"^40`, there are ______
1 mole of Gold and Silver contain same number of atoms.
The graphite refill used is pencil is made of element called ______.
What are the 3 most abundant atoms on the earth?
