The practical activities in the teaching of Chemistry are the set of actions of the students with the substances or their representations, using the instruments and utensils of the laboratory under the guidance and direction of the teacher.
Summary
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- 1 Story
- 2 Objective
- 3 Previous knowledge of the teacher
- 4 Aspects to consider for the success of the practical activity
- 5 Types of practical activities
- 6 Tools frequently used in the laboratory
- 1 Measurement vessels
- 2 Various use containers
- 3 Utensils for various uses and specialized uses
- 4 Metal materials
- 5 Teams
- 7 Safety standards in the laboratory
- 8 Sources
History
Motivating the study of chemistry in adolescents is not an easy task. Theoretical learning of this science is tedious and boring without the help of experimentation. Obviously, explaining to a student that carbon reacts with dioxygen , producing carbon dioxide gas , with evolution of light and heat , is clearly not the same as showing an experiment where carbon combustion takes place. The development of chemical sciencefrom its birth to the present day it is one of the most impressive chapters in the history of humanity. We live immersed in a world of objects produced by man to satisfy his needs, chemistry playing a predominant role as science. That is why M. Lomonosov expressed. “You don’t need a chemist who has learned this science just by reading books, but one who has learned it by exercising with dedication in this art.”
objective
- Correct the knowledge of the students.
- Check the veracity of a hypothesis or solve a problem.
- Demonstrate man’s scientific knowledge of the world, the possibility of transforming nature and his responsibility to care for it.
- Motivate the study of science.
Previous knowledge of the teacher
- Know rigorously the activity that the students are going to do.
- The skills they are going to develop.
- The actions and operations they will carry out.
- What is to be observed and the result that is obtained.
Aspects to consider for the success of the practical activity
- Proposed objective
- Domain owned by students.
- Existence of materials to use.
- Motivation, orientation, execution and control of the activity.
Types of practical activities
- Demonstrations
- Class experiments.
- Laboratory practices.
Frequently used in the laboratory
Chemistry Laboratory
Measuring vessels
- Dropper
- Test tube
- Pipette
- Burette
- Volumetric flask
Multi-purpose containers
- Beaker
- Erlermeyer
- Ball
- Separation funnel
- Flask
- Jar
- Mortar
- Glass clock
- Test tube
- Wash-bottle
Utensils for various uses and specialized uses
- Funnel
- Agitator
- Teaspoon spatula
- Rack
- Condenser
- Combustion tube
- Clay triangle
Metal materials
- Universal support
- Tripod
- Combustion spoon
- Test tube clamp
- Hoop or ring
- Crucible clamp
- Forceps beaker
- Clip bureta
Teams
- Balance
- Thermometer
- Alcohol burner
Security norms in the lab
- Do not test the substances, as many are toxic
- Do not smell substances directly from the container
- Do not touch substances with your hands
- Close the jars tightly when using the substances
- Use the stirrer to dissolve the solid substances in the liquid ones
- After handling chemical reagents wash your hands before eating food
- Never pipet liquids by absorbing with your mouth
- All bottles containing substances must be labeled.
