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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

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1.

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

  True

  False

 

2.

Atoms are electrically neutral.

  True

  False

 

3.

Neutrons are negatively-charged.

  True

  False

 

4.

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

  True

  False

 

5.

Nucleus always contains a neutron.

  True

  False

 

6.

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

  True

  False

 

7.

The atom is mainly empty.

  True

  False

 


 
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