Question

Q 1 Choose the appropriate option and rewrite the following statements:
a. The intermolecular force is ___ in particles of solid.
b. Solids retain their volume even when external pressure is applied. This property is
called ___.
c. Matter is classified into the types of mixture, compound, and element, by applying
the criterion _____.
d. Matter that contain two or more constituent substances is called ____.
e. Milk is an example of type of matter called ___.
f. Water, mercury, and bromine are similar to each other, because the three are
___.
g. Valency of carbon is 4 and that of oxygen is 2. From this we understand that there
are __ chemical bond/bonds between one carbon atom and one oxygen atom in the
compound- carbon dioxide.
__
Q 2 Identify the odd term and explain.
a. Gold, Silver, Copper, Brass
b. Hydrogen, hydrogen peroxide, carbon dioxide, water vapour.
c. Milk, lemon juice, carbon, steel.
d. Water, mercury, bromine, petrol.
e. Hydrogen, sodium, potassium, carbon.
__

Answer 1

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Q] Choose the appropriate option and rewrite the following statements:

a. The intermolecular force is maximum in particles of solid.

b. Solids retain their volume even when external pressure is applied. This property is  called elasticity.

c. Matter is classified into the types of mixture, compound, and element, by applying the criterion chemical composition of matter.

d. Matter that contain two or more constituent substances is called mixture.

e. Milk is an example of type of matter called heterogeneous mixture.

f. Water, mercury, and bromine are similar to each other, because the three are  liquids.

g. Valency of carbon is 4 and that of oxygen is 2. From this we understand that there  are 2 chemical bonds between one carbon atom and one oxygen atom in the  compound- carbon dioxide.

     

Q] Identify the odd term and explain.

a. Gold, Silver, Copper, Brass

Ans: Brass

• Brass is an alloy, and the others are elements.

b. Hydrogen, hydrogen peroxide, carbon dioxide, water vapour.

Ans: Hydrogen

• Hydrogen is a monovalent element and the others are compounds.

c. Milk, lemon juice, carbon, steel.

Ans: Carbon

• Others are mixtures.

d. Water, mercury, bromine, petrol.

Ans: Petrol

• Petrol is a mixture and the others are inorganic compounds.

e. Hydrogen, sodium, potassium, carbon.

Ans: Carbon

• Others are monovalent elements.

___

Apologies for the mistakes <3

Answer 2

Q1

• The intermolecular force is maximum in particles of solid.

• Solids retain their volume even when external pressure is applied. This property is called elasticity.

• Matter is classified into the types of mixture, compound, and element, by applying the criterion chemical composition of matter.

• Matter that contain two or more constituent substances is called mixture.

• Milk is an example of type of matter called heterogeneous mixture.

• Water, mercury, and bromine are similar to each other, because the three are liquids.

• Valency of carbon is 4 and that of oxygen is 2. From this we understand that there are 2 chemical bonds between one carbon atom and one oxygen atom in the compound- carbon dioxide.

Q2

a. Gold, Silver, Copper, Brass

Ans: Brass

b. Hydrogen, hydrogen peroxide, carbon dioxide, water vapour.

Ans: Hydrogen

c. Milk, lemon juice, carbon, steel.

Ans: Carbon

d. Water, mercury, bromine, petrol.

Ans: Petrol

e. Hydrogen, sodium, potassium, carbon.

Ans: Carbon