Advertisements
Advertisements
Question
What are the conditions for 'something' to be called 'matter'?
Advertisements
Solution
The main conditions for something to be matter are, it should:
- occupy space and
- have mass
APPEARS IN
RELATED QUESTIONS
The molecules can move freely anywhere in
Liquids have definite shape and definite volume.
Classify the following into elements, compounds and mixtures:
- Sodium
- Soil
- Sugar solution
- Silver
- Calcium carbonate
- Tin
- Silicon
- Coal
- Air
- Soap
- Methane
- Carbon dioxide
- Blood
Name two solid, two liquid and two gaseous elements at the room temperature.
Name a metal which has no fixed shape.
What are the three general classes of matter ? Give one example of each type.
The property/properties which enable copper metal to be used for making electric wires is/are :
How will you test whether a given solution is a colloidal solution ?
When the solid A is added to water, it dissolves with the evolution of a lot of heat and making little explosions to form two products B and C. The properties of products B and C are entirely different from those of solid A as well as water. Moreover, products B and C cannot be reconverted into solid A and water. When another solid D is added to water, it dissolves with the absorption of a little heat to form a product E which cools down. The product E shows the properties of both, solid D as well as water. Moreover, product E can be converted into solid D and water.
(a) What type of change occurs when solid A is dissolved in water ? Why ?
(b) What type of change occurs when solid D is dissolved in water ? Why ?
(c) Name a metal which you think could behave like solid A. Also name the products B and C.
(d) Name the solid D if it is the one which is used in making ordinary dry cells.
(e) Name the process by which D can be recovered from E.
Name the process by which the various gases of the air are separated.
What difference in the properties of oil and water enable their separation by a separating funnel ?
Fill in the following blanks with suitable words :
A heterogeneous mixture of liquid and solid is conveniently separated by...............
How would you obtain sodium chloride from a mixture of sodium chloride and sulphur without using water ?
With the help of a labelled diagram, describe the method of separating ammonium chloride from a mixture of ammonium chloride and common salt. Mention the difference in the properties of ammonium chloride and sodium chloride which has made this separation possible.
Draw a labelled diagram of the fractional distillation apparatus used for separating a mixture of alcohol and water.
If there is a sudden shower, we take shelter under a roof at the roadside. Even though the rain does not fall on us directly, we get wet to some extent. Why ?
Which among the following is not a matter?
The phenomenon of Evaporation takes place at the ______ of a liquid.
The fluidity of solids: ______.
Define the term matter.
