Chemical experimental instruments and drugs in junior and senior high schools

Experiment is the focus of chemistry, junior high school and senior high school will be exposed to chemical experiments, which requires us to know something about commonly used instruments and drugs. Then I will share with you some chemical experimental instruments and drugs for junior and senior high schools, hoping to help you.

Chemical experimental instruments for junior and senior high schools:

Alcohol lamp, asbestos net, test tube, small test tube, large test tube, test tube rack, tube brush, rubber head dropper, iron frame (with iron clip and iron ring), glass sheet, mortar, pestle, single hole plug, double hole plug, latex tube, rubber band, rubber plug, glass elbow, beaker, small beaker, etc. Round bottom flask, zeolite, spherical drying tube, airway, conical flask, glass conduit, tray balance, long neck funnel, separating funnel, pear-shaped separating funnel, small spray bottle, oxygen bag, suction filter bottle, rubber stopper, narrow mouth bottle, wide mouth bottle, label, drip tray, gauze, watch mirror, evaporating dish, solution conductive demonstrator, condenser tube, etc.

Chemical experimental instruments and drugs in junior and senior high schools;

Auxiliary: wood block, stick, match, cotton, distilled water, alum, soapy water (with glycerin), fine sand, small balloon, sandpaper, red ink, dry flour, detergent, PH test paper Metal: brass sheet, solder, tin, nail, iron sheet, thin iron wire, copper wire, aluminum wire, aluminum powder, aluminum strip, aluminum wire.

Non-metal: sulfuric acid, candle, red phosphorus, white phosphorus, sulfur, charcoal, charcoal powder, chlorine indicator: magenta, phenolphthalein solution, purple litmus.

Oxides: quicklime, iron oxide, sodium peroxide, hydrogen peroxide solution, manganese dioxide, copper oxide powder, acid: nitric acid, dilute hydrochloric acid, dilute sulfuric acid, acetic acid, concentrated hydrochloric acid and concentrated sulfuric acid.

Alkali: sodium hydroxide, calcium hydroxide, barium hydroxide, aluminum hydroxide, clarified limewater, concentrated ammonia water and alkaline lime salt: potassium permanganate, sodium chloride, ammonium nitrate, potassium nitrate, plant ash, crude salt, sodium carbonate, sodium bicarbonate, ammonium bicarbonate, ammonium chloride, ammonium sulfate, phosphate rock powder, calcium superphosphate, potassium sulfate, potassium chloride, barium chloride, silver nitrate, ferric chloride and ferrous chloride.

Organic matter: sucrose, iodine, gasoline, ethanol, vegetable oil, polyethylene plastic fragments, carbon tetrachloride, benzene, bromine water, acetic acid, glucose, iodine wine and starch.

General chemistry experiment in junior and senior high schools;

1. How to check whether NaOH deteriorates: Dropping dilute hydrochloric acid will cause bubbles to deteriorate.

2. Check whether the quicklime contains limestone: add dilute hydrochloric acid dropwise, and if there are bubbles, it contains limestone.

3. Check whether NaOH contains NaCl: firstly, drop enough dilute nitric acid, and then drop AgNO3 solution. If a white precipitate appears, it means that it contains NaCl.

4. Check that three bottles of test solutions are dilute nitric acid, dilute hydrochloric acid and dilute sulfuric acid.

Drop Ba(NO3)2 solution into three test tubes respectively. If white precipitate is produced, it is dilute H2SO4, and then drop silver nitrate solution. If white precipitate is produced, it is dilute HCl and the rest is dilute HNO3.

5, starch: add iodine solution, if it turns blue, it means it contains starch.

6. Glucose: Add newly-made copper hydroxide, and if brick red cuprous oxide precipitate is generated, it will contain glucose.

Articles on chemical experimental instruments and drugs in junior and senior high schools;

★ Chemical experimental instruments and medicines for junior and senior high schools.

★ Use and precautions of common experimental equipment for senior high school chemistry.

★ Dangerous goods in high school chemistry laboratory

★ Summarize the use methods of common instruments in senior three chemical experiments.

★ Learning Strategies of Chemistry Experiment in Senior High School

★ Basic knowledge points of high school chemistry experiment

★ Purification of crude salt in high school chemistry experiment

★ Introduction to the basic operation of chemical experiment

★ Common operations in high school chemistry experiments

★ Basic operation knowledge points of high school chemistry experiment