Names and charts of junior high school chemical instruments

The instruments commonly used in junior high school chemistry experiments are beakers, substances, alcohol lamps and so on.

Beaker: Beakers are commonly used experimental containers, which are mainly used for stirring, heating and mixing reaction substances. Usually cylindrical, with wide edges, it is convenient to pour out the solution obliquely. Test tube: A test tube is a glass container used for small-scale experiments, usually in a straight tube shape. It can be used to heat, mix solutions and observe reactions.

Alcohol lamp: Alcohol lamp is an experimental tool to provide heat source, which contains alcohol as fuel. Ignite alcohol and generate flame to heat other experimental equipment. Bunsen burner: A burner is a device used to generate high-temperature flame. It consists of a base, an air valve, a regulating valve and a nozzle, and can provide a stable heat source.

Pipette: A burette is a tool for accurately measuring liquid, usually a glass tube. It can drop liquid accurately and be used to measure the volume of solution. Gas tank: A gas tank is a container for collecting gas, usually cylindrical. It can be used for gas experiments, and there is an opening at the top for gas to enter and exit.

Separating funnel: A separating funnel is used to separate two immiscible liquids. It has a special shape and can easily separate two liquids. Acid-base indicator: Acid-base indicator is used to detect the acid-base properties of solution. It will change color with the change of pH value of the solution, which is helpful to determine the pH value of the solution.

Chemical instruments play an important role in chemical experiments and research. Reasonable use and maintenance of instruments and equipment can improve the accuracy and efficiency of experiments and promote the development of chemical science. At the same time, we should also realize the importance of safety awareness and follow the relevant operating procedures to ensure the safety of chemical experiments.

The role of chemical instruments

1, chemical instruments play an important role in experiments. They help to observe, analyze and react substances. Reasonable selection and use of chemical instruments can make experiments more accurate and safer. With the development of science and technology, chemical instruments are constantly innovating and progressing. Instruments and equipment commonly used in modern chemistry laboratories include chromatographs, spectrometers and electronic balances. These instruments can provide more accurate data and analysis results and support more in-depth chemical research.

2. In addition to the chemical instruments in the laboratory, there are some large-scale chemical equipment used in industrial production, such as reactors and distillation columns. These equipments play an important role in chemical engineering and pharmaceutical fields, and are helpful for large-scale chemical synthesis and separation operations. Whether it is laboratory instruments or industrial equipment, safe use is very important. In the process of chemical experiment, the instrument should be kept clean and tidy, the operating rules should be observed, and the parameters such as temperature and air pressure should be adjusted correctly.