English

Give reason of Ice floats on water.

Advertisements
Advertisements

Question

Give reason of Ice floats on water.

One Line Answer
Advertisements

Solution

Ice has a low density as compared to water. Water has a maximum density at 4°C. That is why ice floats on water.

shaalaa.com
Anomalous Expansion of Water
  Is there an error in this question or solution?
Chapter 8: Water - Exercise I [Page 107]

APPEARS IN

S.P. Singh Concise Chemistry [English] Class 8 ICSE
Chapter 8 Water
Exercise I | Q 6.4 | Page 107

RELATED QUESTIONS

Water is used as a cooling agent.


Consider the situation of the previous problem. Assume that the temperature of the water at the bottom of the lake remains constant at 4°C as the ice forms on the surface (the heat required to maintain the temperature of the bottom layer may come from the bed of the lake). The depth of the lake is 1.0 m. Show that the thickness of the ice formed attains a steady state maximum value. Find this value. The thermal conductivity of water = 0.50 W m−1°C−1. Take other relevant data from the previous problem.


At what temperature is the density of water is maximum? State its value. 


Density of water is maximum at :


Why does a thick glass tumbler crack when very hot water is poured in it?


The following figure shows a metal cylinder, containing boiling water. One half side A is polished and another half, B is painted black. Two thin metal sheets X and Y are painted black and have one rubber stopper fixed with wax on each sheet. These sheets are equidistant from the boiling water (container A, B) as shown in the diagram. What would you expect to happen after a few minutes? Give a reason for your answer.


Observe the given graph and answer the following questions:

  1. Name the process represented in the figure.
  2. At what temperature does this process take place?

Draw a neat and labelled diagram of Hope’s apparatus.


Write a short note.

Anomalous behaviour of water


Match the columns:

Column ‘A’ Column ‘B’
The density of water is maximum at (a) 0°C
  (b) 4°C
  (c) 100°C

Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×