Advertisements
Advertisements
Question
Classify the following into elements, compounds and mixtures :
arble, Air, Gold, Brass, Sand, Diamond, Graphite, Petroleum, Common salt, Sea-water, Chalk
Solution
Elements: Gold and Diamond
Compounds: Common salt and marble
Mixtures: Brass and seawater.
APPEARS IN
RELATED QUESTIONS
Liquids have definite volume but do not have definite shape.
Liquids have definite shape and definite volume.
Write true or false for each statement. Rewrite the false statement correctly.
Matter cannot exist in different states.
All kinds of matter
Fill in the following blank with suitable words :
The best evidence that the particles of matter are constantly moving comes from the studies of ................. and ...................
When a crystal of potassium permanganate is placed in a beaker, its purple colour spreads throughout the water. What does this observation tell us about the nature of potassium permanganate and water?
Describe in your own words, what happens to the particles when salt dissolves in water.
Honey is more viscous than water. Can you suggest why?
Classify the following into elements and compounds :
- H2O
- He
- Cl2
- CO
- Co
The elements which normally exist in the liquid state are :
State whether colloidal solutions are homogeneous or heterogeneous.
What happens when the temperature of a saturated sugar solution is increased ?
Name the different types of solutions. Give one example of each.
Define the Emulsion Give one example.
One of the following represents the solution of solid in a solid. This one is :
Write a method to separate a mixture of sand and potash alum.
Draw a labelled diagram of the fractional distillation apparatus used for separating a mixture of alcohol and water.
The particles in the matter are extremely small and can be seen even with a powerful microscope.
Evaporation does form bubbles.
