Is Matter Around Us Pure - VNGS North

1.

Multiple Choice

30 sec

1 pt

All matter is made up of

Compounds

Atoms

Cells

2.

Multiple Choice

30 sec

1 pt

Are made from a combination of 2 or more different elements...

Elements

Pure Substances

Compounds

3.

Multiple Choice

30 sec

1 pt

H2 would be a .....

Solid

Compound

Element

4.

Multiple Choice

30 sec

1 pt

CO2 would be a .....

Compound

Molecule

Compound AND Molecule

Element

5.

Multiple Choice

30 sec

1 pt

A combination that can be separated by physical processes is a .....

Pure Substance

Glucose

Element

Mixture

6.

Multiple Choice

30 sec

1 pt

A mixture that is NOT evenly distributed is called ....

Compounded

Homogenous

Heterogenous

Salty

7.

Multiple Choice

30 sec

1 pt

A mixture that is evenly distributed is called ...

Heterozygous

Heterogenous

Homogenous

Periodic

8.

Multiple Choice

30 sec

1 pt

Changing the phase, size or shape of something....

Chemical change

Physical Change

Suspension

Colloid

9.

Multiple Choice

30 sec

1 pt

If you change a substance into a new substance...

Partial Change

Physical Change

Chemical Change

Freezing

10.

Multiple Choice

30 sec

1 pt

Substance with atoms that are all alike.

element

compound

homogeneous mixture

heterogeneous mixture

11.

Multiple Choice

30 sec

1 pt

Which of the following is not a clue that a chemical change is taking place?

rapid release of energy (heat, light, or sound)

phase change

formation of bubbles

formation of a precipitate from solution

12.

Multiple Choice

30 sec

1 pt

Which of the following mixtures will be the most difficult to separate?

Iron filings + sand

Sand + water

Sawdust + stones

Nitrogen + hydrogen

13.

Multiple Choice

30 sec

1 pt

A saturated salt water solution was heated and allowed to cool without adding any more salt. What will happen?

Some salt appears to settle at the bottom.

Some more salt can be dissolved now.

No change takes place.

Both A or B.

14.

Multiple Choice

30 sec

1 pt

Which of the following is an example of a solid-in-gas mixture?

Soil

Smoke

Moisture

Dew

15.

Multiple Choice

30 sec

1 pt

Sugar syrup, usually used to coat sweets with sugar, becomes hard when cooled. From this we can conclude that sugar syrup is

a supersaturated solution

an unsaturated solution

not a solution

None of the given options.

16.

Multiple Choice

30 sec

1 pt

Filtration as a method of separation can be used for mixtures that are

homogeneous and liquid-in-gas mixtures

heterogeneous and liquid-in-liquid mixtures

homogeneous and solid-in-liquid mixtures

heterogeneous and solid-in-liquid mixtures

17.

Multiple Choice

30 sec

1 pt

Which changes of state occur during distillation?

Boiling followed by filtration

Boiling followed by condensation

Condensation followed by boiling

Filtration followed by boiling

18.

Multiple Choice

30 sec

1 pt

Two miscible liquids having different boiling points can be separated by

sublimation

Evaporation

Fractional distillation

loading

19.

Multiple Select

45 sec

1 pt

Choose the correct statement from the following

Oil is miscible in water

Fractional distillation is a method used for separating homogeneous mixture of two liquids.

All pure substances are homogeneous in nature.

The constituent elements of a compound can be separated only by chemical reactions.

20.

Multiple Choice

30 sec

1 pt

Naphthalene and iron filings can be separated by the method of

Evaporation

Filtration

Magnetic Separation

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