Tag: introduction of atom

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

What is the smallest constituent of matter that retains its chemical identity?

  1. Atom

  2. Molecule

  3. Ion

  4. Radical
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Atom is the smallest unit of matter that still retains its chemical identity.Atoms can be broken down into electrons,neutrons and protons which can be further broken down into quarks.Atoms differ from each other with different chemical properties.

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

Nine planets revolve around the sun. The outer, distant planets are Jupiter, Saturn, Neptune, Uranus and Pluto. In comparison to these, the 'inner planets', Mercury, Venus, Earth and Mars that are nearer to the centre of the sun contain relatively:

  1. New elements of matter

  2. Lighter elements

  3. Heavier elements of matter

  4. Larger quantities of gas
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The inner planets (terrestrial planets) are composed primarily of rock and metal, which consist of heavier elements, whereas the outer gas giants are composed mostly of lighter gases.

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

As a balloon is filled with water,it expands and increases in weight,This shows that water:

  1. Has mass

  2. Occupies space

  3. Is a kind of matter

  4. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The balloon expands shows that the water n the balloon is occupying the space and the increase in weight of the balloon proves that water has mass and Matter is anything that has mass and takes up space.

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

 Matter is composed of:

  1. atoms

  2. molecules

  3. tiny particles

  4. all of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Matter is anything which have mass and occupy space. Substance and Mixture is the main part of the matter. Substance is the further classified in elements and compound, which is further categorized as atom and molecule. 

Hence, matter is composed of everything atoms, molecules, tiny particles etc.