Name: An Introduction to Chemistry
Uploaded: 2019-07-19
Duration: 1 min 45 s
Description: Chemistry is the branch of science dealing with the structure, composition, properties, and reactive characteristics of matter. Let's explore the video to kn...

Question

Observe the following pictures and write down the type of chemicals used in them.

Accepted Answer

It is a picture of sunscreen. Sunscreens are creams that protect us from harmful sun rays. Sunscreens are mostly composed of Titanium dioxide. It has a strong absorbing capacity so that it blocks ultraviolet light and prevents our skin from these harmful rays of the Sun. Thus, it helps to prevent sunburn, skin cancer and premature ageing.

It is a decorative statue made of Plaster of Paris(POP). It is manufactured by heating calcium sulphate dihydrate or gypsum to $120 ° C$ . The chemical formula of Plaster of Paris is ${CaSO}_{4} . \frac{1}{2} H_{2} O$ . When mixed with water, POP sets to a hard mass. It is used in casting statues, surgical plasters, and also used in making decorative ceilings in houses.

It is a cosmetic product which contains a foaming agent sodium lauryl sulphate. Generally, foaming cosmetics, such as shower gel and shampoo, toothpaste, etc., have sodium lauryl sulphate(SLS). SLS is an inexpensive and effective foamer.

Antacids are mild bases, so they can neutralise the excess stomach acids that cause heartburn. They neutralise the excess acid produced in the stomach to relieve indigestion and heartburn. They are available as liquid or chewable tablets. Sodium hydrogen carbonate, aluminium hydroxide, milk of magnesia, etc., are a few examples of it.

They are common laboratory apparatus conical flask and beaker. They are made up of pyrex glass as it can withstand high temperatures and are also chemical resistant.

These are nylon ropes. Nylon is manufactured from adipic acid and hexamethylene diamine. Nylon is a synthetic fibre. A nylon thread is very strong and can withstand high loads. Therefore it is used in making parachutes and ropes for rock climbing.

Lakhmir Singh & Manjit Kaur Solutions for Chapter: Introduction to Chemistry, Exercise 6: WORKSHEET

Lakhmir Singh & Manjit Kaur Chemistry Solutions for Exercise - Lakhmir Singh & Manjit Kaur Solutions for Chapter: Introduction to Chemistry, Exercise 6: WORKSHEET

Questions from Lakhmir Singh & Manjit Kaur Solutions for Chapter: Introduction to Chemistry, Exercise 6: WORKSHEET with Hints & Solutions

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