Tag: elements and atoms

Questions Related to elements and atoms

Matter consist of particles such as ____.

evs look, learn and experience brief introduction to atoms of elements elements and atoms introduction of atom

  1. ions

  2. molecules

  3. atoms

  4. All of the above

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Correct Option: D
Explanation:

All materials are made up of matter, and matter consists of particles such as atoms, ions or molecules.

Chemically, matter can be classified as ___________.

evs look, learn and experience brief introduction to atoms of elements elements and atoms introduction of atom

  1. pure and impure substances

  2. elements, compounds and mixtures

  3. solids, liquids and gases

  4. metals and non-metals

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Correct Option: A
Explanation:

Matter can be classified chemically as pure substance (elements and compounds) and mixture or impure substance.

On the basis of composition, which of the following is a type of matter?

evs look, learn and experience brief introduction to atoms of elements elements and atoms introduction of atom

  1. Compound

  2. Solid

  3. Liquid

  4. Both b and c

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Correct Option: A
Explanation:

On the basis of composition, matter can be classified as compound, element and mixture. Solids, liquids and gases are physical states of matter.

Which of the following is a matter?

evs look, learn and experience brief introduction to atoms of elements elements and atoms introduction of atom

  1. Chair

  2. Smell

  3. Love

  4. Cold

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Correct Option: A
Explanation:

Anything that occupies space and has mass is called as matter. Smell, love and cold does not occupy space and has no mass. Hence, they are not matter.

Which of the following are states of matter?

evs look, learn and experience brief introduction to atoms of elements elements and atoms introduction of atom

  1. solid

  2. liquid

  3. gases

  4. all of the above

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Correct Option: D
Explanation:

There are three states of matter: Solid, liquid, gases.

The state or phase of a given set of matter can change depending on _____________.

evs look, learn and experience brief introduction to atoms of elements elements and atoms introduction of atom

  1. temperature

  2. pressure

  3. Both a and b

  4. None of above

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Correct Option: C
Explanation:

The state or phase of a given set of matter can change depending on pressure and temperature conditions, transitioning to other phases as these conditions change to favor their existence; for example, solid transitions to liquid with an increase in temperature. Near absolute zero, a substance exists as a solid.

Identify which of the following has mass and takes up space is :

evs look, learn and experience brief introduction to atoms of elements elements and atoms introduction of atom

  1. energy

  2. work

  3. matter

  4. acceleration

  5. force

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Correct Option: C
Explanation:

Anything that has mass and posses space is known as matter.


Hence the correct option is C.

More than one may be correct:
The number of g-atoms of nitrogen in its $7gm$ is equal to number of g-atoms in

evs look, learn and experience brief introduction to atoms of elements elements and atoms introduction of atom

  1. $6gm$ $Mg$

  2. $28gm$ $fe$

  3. $30gm$ $Ca$

  4. $20gm$ $Hg$

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Correct Option: A

The matter can not be perceived through our senses.

evs look, learn and experience brief introduction to atoms of elements elements and atoms introduction of atom

  1. True

  2. False

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Correct Option: B
Explanation:

The matter can be perceived through our senses. Example: water is matter and we can sense it by touching it and by seeing it.

Which of the following is not matter?

evs look, learn and experience brief introduction to atoms of elements elements and atoms introduction of atom

  1. Air

  2. Water

  3. Light

  4. Sofa

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Correct Option: C