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Chemistry : Atoms, Molecules, Elements and Compounds


Answer the following questions by choosing the appropriate option.

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Multiple choice

Your Performance  

1.

Atomic weight of an element is the mass of an atom of that element in grams.

  True

  False

 

2.

In a neutral atom, the number of electrons and protons is equal.

  True

  False

 

3.

An atom consists of a central nucleus containing positively-charged protons and negatively-charged neutrons.

  True

  False

 

4.

The nucleus consists of protons and neutrons and is negatively-charged.

  True

  False

 

5.

The number of electrons in a neutral atom is equal to its atomic number.

  True

  False

 

6.

Atomic number of an element is the number of neutrons present in the nucleus of the atom.

  True

  False

 

7.

Isotopes differ in the number of neutrons they have in their nucleus.

  True

  False

 


 
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