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

A mixture is made from different substances that are ___________.

  1. not chemically joint

  2. chemically joint

  3. physically joint

  4. not physically joint
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A mixture is made from different substances that are not chemically joined. 


For example powdered iron and powdered sulphur mixed together makes a mixture of iron and sulphur. They can be separated from each other without a chemical reaction.

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

Everything in the universe is made up of material called as _______.

  1. life

  2. water

  3. matter

  4. None of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Everything in this universe is made up of material which scientists have named "matter". 


It can be living or non-living. 

For example, human beings are matter as well as a duster is also a matter.

Hence the correct option is C.

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

Which of the following is the correct properties of matter?

  1. have no mass but occupies space

  2. have mass but occupies no space

  3. have no mass and occupies no space

  4. it have mass and occupies space
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Matter is something that has mass and occupies space. 


It can be living or non-living. 

Hence the correct option is D.

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

Which of the following is not matter?

  1. Oxygen

  2. Microwaves

  3. Water

  4. All of above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Matter is something that occupies space and has volume.
Microwaves are a form of electromagnetic radiation with wavelengths ranging from one meter to one millimeter. 

It does not have mass and volume. It is neither a solid, liquid or gas. Hence, microwave cannot be considered as matter.
Hence, the correct option is $B$.

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

Change of state is also called as _____________.

  1. phase change

  2. mass change

  3. volume change

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

Matter can move from one state to another, but can still be the same substance. A change of state, also called a phase change, is a physical change from one state of matter to another, 

for example, from solid to liquid or from liquid to gas.