Is Matter Around us Pure?

Question 1

Mixture

[ Define ]

Answer 1

Mixtures are substances constituted by more that one kind of pure form of matter.

Question 2

Solution

[ Define ]

Answer 2

A solution is a homogeneous mixture of two or more substances.

Question 3

Alloys

[ Define w/ examples ]

Answer 3

• Alloys are mixtures of two or more metals or a metal and non-metal.
• Its components cant be seperated by physical methods, but it shows properties of constituents.
• Brass - 30% Zinc + 70% Copper.

Question 4

Components of Solution

Answer 4

The component of a solution that dissolves the other component is called solvent. The component dissolved in solvent is called solute.

Question 5

1 nanometre in metre is

Answer 5

1nm = 10 ^-9 Metre

Question 6

Saturated Solution

Answer 6

A solution that has dissolved as much solute as it is capable of dissolving.

Question 7

Unsaturated Solution

Answer 7

A solution that has dissolved less solute than its saturation level.

Question 8

Solubility

Answer 8

The amount of solute present in saturated solution at normal temperature.

Question 9

Suspension

Answer 9

A hetrogeneous mixture in which the solids are disperses in liquids. The solids dont dissolve in liquids but rather are suspended.

Question 10

Colloidal Solution

Answer 10

A hetrogeneous solution in which the particles are uniformly spread throught solution.

Question 11

Components of Colloids

Answer 11

Dispersed medium is the solvent-like component in which the dispered phase (solute-like component) is suspended.

Question 12

Elements

Answer 12

Element is a basic form of matter that cant be broken down into simpler substances by chemical reactions.

Question 13

Compounds

Answer 13

Compound is a substance composed of two or more elements, chemically combined with each other in a fixed proportions.