हिंदी
सी.आई.एस.सी.ई.आईसीएसई ICSE Class 7

Name the Terms for the Change of a Solid into Liquid. - Chemistry

Advertisements
Advertisements

प्रश्न

Name the terms for the change of a solid into liquid.

एक शब्द/वाक्यांश उत्तर
Advertisements

उत्तर

Melting.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 1: Matter and Its Composition - Exercise

APPEARS IN

सेलिना Concise Chemistry [English] Class 7 ICSE
अध्याय 1 Matter and Its Composition
Exercise | Q 12.1

संबंधित प्रश्न

Define the following term  of Matter .


All kinds of matter


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?


Explain why steel is used to make railway lines.


When extremely small particles X derived from the anther of a flower were suspended in a liquid Y and observed through a microscope, it was found that the particles X were moving throughout the liquid Y in a very zig-zag way. It was also observed that warmer the liquid Y, faster the particles X moved on its surface.

  1. What could particles X be ?
  2. What do you think liquid Y is ?
  3. What is the zig-zag movement of X known as ?
  4. What is causing the zig-zag movement of particles X ?
  5. Name the scientist who discovered this phenomenon.
  6. What does this experiment tell us about the nature of liquid Y?

Fill in the following blanks with suitable words :

Brass is an alloy which is considered a ..............


What is the other name for impure substances ? Give two examples of impure substances.


A, B and C are all liquids. Liquid A has a comparatively low boiling point. On heating, liquid A vaporises completely without leaving behind any residue. Liquid A is being used increasingly as a fuel in motor vehicles either alone or by mixing with petrol. Liquid B has a very high boiling point. It also vaporises completely on heating, without leaving any residue. Liquid B is a conductor of electricity and used in making thermometers. Liquid C has a moderate boiling point. On heating, liquid C vaporises leaving behind a white solid D which is used in cooking vegetables. The condensation of vapours from C give a liquid E which turns anhydrous CuSO4 to blue.

(a) Which liquid could be an element ? Name this element.

(b) Which liquid could be a mixture ? Name this mixture.

(c) Which liquid could be a compound ? Name this compound.

(d) What could the solid D be ?

(e) What do you think is liquid E ?


What is the concentration of a solution which contains 16 g of urea in 120 g of solution ?


Fill in the following blank :

A colloid is a ..............mixture and its components can be separated by the technique known as ...............


Which one of the following is not a chemical change ?


Name the process which is used in milk dairies to separate cream from milk.


Name the process by which all the dye can be recovered from black ink.


Which of the following mixture cannot be separated by using water as the solvent ?


The boiling point of liquid argon is :


What's the solution?

We need to rub salt on a corncob, but only salt crystals are available.


Rusting of an article made up of iron is called


Give an example of a molecule.


Define the term matter.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×