Question

..and
Fill in the blank spaces with suitable word(s)
a. A solution is a substance which consists of .......
b. Crude oil is separated to its components by.
.............is the energy of a particle in motion while potential energy
is..........
Write true for correct expression and false for a wrong one.
The melting of wax when heated is permanent change......
b. The drying of wet shirt in the sun is a permanent change........
C. The burning of charcoal in air is a non-permanent change.
d. The explosion of petrol bomb is a non-permanent change...
What is the difference between the following terms?
a. Freezing point and boiling point
b. Fractional distillation and fractional crystallization.​

Answer 1

Answer:

1. solute

2. ??

true. or false.

1 false

2. false

3. false

4. ?

5. The 'freezing point' of a substance is the level of temperature at which a 'liquid' is converted into 'solid'. In case of mixtures, the freezing point is comparatively lower than the boiling point. An increase in pressure increases the freezing point as the freezing point and pressure are 'directly proportional'

6. Fractional distillation is a separation technique where where chemical compounds are separated by heating them to a temperature at which one or more fractions vaporizes based on their differences in their boiling points; whereas crystallization is a method of refining substances by separating them based on their