Dangers in a School Science Lab

Author: 
Romeo Hilton
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A school laboratory is important for teaching scientific subjects such as biology, chemistry and physics. Students have the opportunity to perform hands-on experiences that help them better understand the principles they have learned in scientific theory. However, a school science lab presents potential risks because of the chemicals and instruments students use to perform experiments.

Summary of this practical sheet

1 fire
2 Chemicals
3 Glass
4 Electricity
Fire
The risk of fire in a school laboratory is very high. Fire can erupt from chemical reactions during experiments. Flammable liquids, such as gasoline, if they come near a source of fire, such as a Bunsen burner. If a fire breaks out in a laboratory, there are several ways to extinguish it, depending on the cause of the fire. These include throwing dry sand on the fire and using a fire extinguisher. A fire caused by flammable liquids can be smothered with carbon dioxide.

Chemical products
Chemicals used in a lab can be harmful to students if accidentally touched. This includes the danger of chemicals splashing into students' eyes during experiments. To reduce the risk, students should wear safety glasses, long sleeves, and lab coats when performing experiments. Some chemicals, such as iodine and hydrogen fluoride, are toxic. These chemicals should be used in very small amounts and students https://lineserved.com/10th-class-qawad-o-insha-book-pdf/ should be under the strict supervision of a teacher when handling them. Chemicals should be removed for storage immediately after use. All chemicals should be stored under lock and key.

Glass
Much of the equipment used in laboratory experiments has traditionally been made of glass, and glass tends to shatter. Shards of glass can injure students and dangerous contents can be spilled. To avoid this, schools should consider using plastic containers whenever possible. In cases where glassware must be used, for example when it is needed for heating substances, heated glass articles should not be stored near water, because if water comes in contact with glass when heated, the glass may shatter. Glassware should also be kept away from young students before and after the experiments. If the glassware breaks, the shavings should be picked up immediately and the floor should be swept thoroughly.

Electricity
Electricity is used in many devices in a school laboratory, for example for lighting and heating. There is a potential risk of a short circuit if the negative and positive wires come into contact. This can happen if students https://lineserved.com/bin-mangi-dua-novel-iffat-sehar-tahir/ accidentally pour water or other liquids into electrical outlets. It can damage the electrical system or even cause a fire. Hotplates require special care because a lit hotplate looks the same as an unlit hotplate. Another danger posed by electricity is electrocution. If the electrical wiring system is faulty, students may come in contact with live wires. To reduce the risk of these accidents occurring, teachers should ensure that students are educated on the correct handling of electricity and electrical gadgets. There should also be frequent inspections of the electrical wiring system so that any faults can be detected before an accident occurs.

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