Question

1. What is crystallization?

2. How salt is obtained from seawater?

3. What are saturated solutions?

4. Write two methods to prevent rusting?

5. What will happen if the cut fruits and vegetables get oxidized?

Answer 1

Answer:

1: crystallisation is the process in which pure solid crystals of the solute are obtained by rigorous heating and then cooling ............ like copper sulphate crystals are obtained from its solution

2: Salt is obtained from sea water by evaporation

3: Saturated solution is that type of solution in which no more solute can be added

4: Rusting can be prevented by galvanisation and by applying paint or grease

5: If the cutted fruits get oxidised then a layer of oxygen compund will form on the exposed surface of the fruit

Explanation:

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Answer 2

Answer:

1. Crystallization

Crystallization or crystallisation is the process by which a solid forms, where the atoms or molecules are highly organized into a structure known as a crystal. Some of the ways by which crystals form are precipitating from a solution, freezing, or more rarely deposition directly from a gas.

2 Salt is obtained seawater

Sea salt is salt that is produced by the evaporation of seawater. It is used as a seasoning in foods, cooking, cosmetics and for preserving food. It is also called bay salt, solar salt, or salt. Like mined rock salt, production of sea salt has been dated to prehistoric times.

3. Saturated Solution

The term saturated solution is used in chemistry to define a solution in which no more solute can be dissolved in the solvent. It is understood that saturation of the solution has been achieved when any additional substance that is added results in a solid precipitate or is let off as a gas.

4. The two methods of rusting

1. Paint it - Paint the metal with any durable acrylic paint. Do not use Water-Soluable paints, since they will only worsen the rust. ...
2. Keep moisture at Bay - Avoid contact with water or moisture. ...

5. The cut fruit and vegetable.

Enzymic browning is an oxidation reaction that takes place in some foods, mostly fruit and vegetables, causing the food to turn brown. Oxidation reactions occur in food and non-food items. Enzymic browning is a reaction which requires the action of enzymes and oxidation in order to occur.

Explanation:

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