You can only unlock the chapter using a special code that we will send you via the Viber app. Receiving a message is free of charge and with no obligations.
My phone number:
Get a code
In compliance with the law, persons under the age of 15 can enter their phone number only in the presence of a parent or guardian.
4-character code:
Check the received code
The page will be refreshed automatically in a few seconds.
To ensure the proper functioning of the website, OpenProf uses cookies that do not store personal data. By continuing to use the website, you agree to cookies. Tell me more »
and its boiling point is 
.Which row gives the correct state of the substance at the given temperatures?
and a beaker of boiling water are both in a laboratory. The laboratory is at 
as shown below.
and its temperature is noted every minute. The results are shown in the table below.
)
)
)
)
. When the thermometer is placed in pure melting ice, the mercury level falls to 
.
can be marked on the stem?
at 
absorbs thermal energy from the surroundings at a rate of 
. The specific latent heat of fusion of ice is 
. How long will it take for the ice cube to melt?
. No water is visible in the beaker until 
has passed. After 
is put into a drink at a temperature of 
. After a short time, some of the ice has melted and the drink has cooled to a temperature of 
. What is the temperature of the remaining ice?
between melting point and boiling point of air? The melting point of the air is 
and the boiling point is 
.
to 
?
in Manchester and 
in London.
and freezes at 
. What is the temperature difference between the boiling point and the melting point of the substance in 
?
. The immersion heater is switched on as shown below.
