What are some fun chemistry experiments to do? High school and college are fine.

1. Soak the eggs in vinegar for about a week and then take them out, 2. Pour the vinegar into the alkaline surface (sodium bicarbonate).

——— because the high school I studied was a high school, I had many opportunities to practice science experiments during my time in school, and I did elephant toothpaste experiments, pharaoh's snake and hydrogen and oxygen mixture** experiments, etc., these three experiments were the most impressive experiments I did in high school.

The first is the elephant toothpaste experiment.

This was an expanded experiment when the chemistry teacher introduced us to hydrogen peroxide in class, but what we didn't expect was that the teacher arranged this experiment for us shortly after. The main process of the experiment is to mix the concentrated hydrogen peroxide with soap and stir it evenly, plus some potassium iodide as a catalyst to catalyze the rapid reaction, and soon you can see the test solution in this Erlenmeyer flask gushing out. It is important to note that the concentration of hydrogen peroxide must be greater than 30%.

Because the liquid sprayed resembles elephant toothpaste, it is called an elephant toothpaste experiment.

The principle of the experiment is mainly that hydrogen peroxide decomposes rapidly, decomposes a large amount of oxygen, and then combines with the foaming agent to produce a large number of bubbles. During the experiment, it is necessary to pay attention to the corrosive nature of high concentrations of hydrogen peroxide, and the heat phenomenon is accompanied by the experimental process, so personal protection is required.

This was followed by the brown bread experiment.

This experiment is an experiment arranged for us by returning to the chemistry textbook that concentrated sulfuric acid can carbonize sugar.

This experiment was based on the Pharaoh's Serpent Experiment. The original Pharaoh's Serpent experiment used mercury thiocyanide to decompose it by heat, but because mercuric thiocyanide is highly toxic, we used white sugar as the raw material for this brown bread experiment. The process of the experiment is very simple, only need to add a large amount of white sugar to the beaker, then pour concentrated sulfuric acid and stir quickly, use the dehydration of concentrated sulfuric acid to quickly oxidize and carbonize the sugar, and then a black sponge-like solid will be produced in the beaker and continue to extend out of the beaker, and produce a large amount of white gas.

After adding the material, it should be quickly kept away from the beaker, do not touch the black solid produced is easy to cause corrosion, and the gas produced is sulfur dioxide, do not inhale, pay attention to maintain ventilation.

Finally, there is a mixed light experiment with hydrogen and oxygen.

Because of the danger of this experiment, this experiment was done by the teacher on our behalf. Under normal circumstances, hydrogen and oxygen will produce a pale blue flame when ignited, but if two gases are mixed 1:1 and then irradiated with strong light**.

**The power should not be underestimated, in the process of the experiment also need to do a good job of protective isolation, wear good goggles, when the beginning of the line of our teacher used two glass covers to conduct experiments, and finally the inner layer of glass covers was completely broken.

Doing these interesting scientific experiments can increase our understanding of the principles of experiments, increase our interest in scientific experiments, improve learning efficiency, and improve our ability to practice.

Hello! The first thing to do is to follow the experiments that are safe and harmless and have obvious results:

The most common are: 1. Magnesium belt combustion 2, hydrogen mixed air slight ** experiment 3, oxygen reduction copper oxide 4, laboratory oxygen production 5, hydrogen production.

One of the simplest is to use a glass rod dipped in starch solution to write on white paper, after the paper is dry, you will find that there is no trace on it, then you can spray iodine solution on the paper, and the paper will show the blue words you wrote.

Have you ever done a leaf vein bookmark? It is to take some leaves and soak them in about naoh to heat, and then brush off the mesophyll with a brush at about the same time, you can dye it if you like, but it looks good without dyeing. I don't remember the specific experimental operation, I remember that the leaves should be harder, the leaves of the osmanthus tree are very suitable, and the other soft leaves are easy to be brushed off.

Vinegar and eggshell reaction CaCO3 +CH3CoOH==Ca(CH3CoO)2+ H2O +CO2 Sprite drops into the milk, and the milk will coagulate.

Tell you not to play with your mobile phone in class, look, the mobile phone was confiscated by the teacher before the question was finished!

Introduce you to a good **:

Experimenting is very different from theorizing, and if you're good at thinking, it's helpful to do experiments. You will have your own new experience and be able to better understand chemistry.

But the home is not very safe.

First of all, we must find a relatively open place to experiment, and secondly, there should be no dangerous goods and combustible materials next to it.

Again, the experiment should be purposeful, don't do what is written in the book, or play around, so that you won't get anything. It is necessary to study a certain issue and come to a conclusion.

Don't mess things up with things you don't know, it's going to kill you.

Oxford English Dictionary of The Commercial Press.

There's a lot of this, and you can experiment with a lot of things from everyday life.

For example, you use a concentrated solution of sodium hydroxide and the zinc cartridge of the battery, put it together and heat it, then put the dime coin into it, cook it for ten minutes, take the coin out and wash it with clean water, and then you can get a silver dime.

Of course, there are many others, so I won't list them all here.

Drinking like yours may affect memory, but it's still good to drink less.

What are some interesting science experiments in chemistry class? Put the eggshell in the vinegar and observe that the eggshell will dissolve and a small amount of bubbles will be produced, which will cause the burning candle to go out. Here's how it works:

The main component of eggshell is calcium carbonate, and the main component of vinegar is acetic acid, and the two will react together. CaCO3+2CH3CoOH = Ca(CH3COO)2+CO2+H20, which then produces carbon dioxide. Carbon dioxide cannot be burned and does not support combustion, it can extinguish a burning candle.

Elephant toothpaste uses a catalyst to rapidly decompose hydrogen peroxide (H2O2), releasing a large amount of gas during the reaction. The principle is this: hydrogen peroxide is a hydroxide compound, which quickly decomposes into water and oxygen under the action of a catalyst (potassium permanganate), and its reaction equation is:

2h2o2=2h2o + o2。If a blowing agent is added during the reaction, the effect of a large amount of foam gushing out in a short period of time will occur.

White sugar fireworks, which drop concentrated sulfuric acid into a mixture of white sugar and potassium chlorate, will instantly release a large amount of heat and produce dazzling fireworks. The principle is this: concentrated sulfuric acid and sugar will produce a strong reaction, and at the same time produce a large amount of heat, the release of heat can make potassium chlorate quickly decompose oxygen, under the action of high temperature, oxygen will further aggravate the oxidation of sugar, and release more heat, so as to produce the effect of fireworks.

The reaction equation is: 3C5H11O5CHO + KCLO3 (+H2SO4 catalysis) = 3C5H11O5CoOH + 3KCl.

Magical color-changing water, which mixes several colorless chemical liquids together, will change color in the blink of an eye, creating a magical effect. Here's how it works: this is a typical chemical oscillation reaction (referring to the uniform oscillation of reactants and products back and forth during the reaction), which is a rather complex reaction, and 400 words are omitted here to avoid headaches.

To put it simply, iodide ions are separated from reagents through chemical reactions, and iodide ions will immediately appear blue when they meet starch.

The combustion of sodium, the reaction of strong acids and bases, the suspension of burning substances, the disappearance of sediments, and the burning of snowballs will produce particularly interesting phenomena in the process of doing these experiments, which can make people feel the magic of chemistry.

When I was in junior high school, in chemistry class, the female chemistry teacher sprayed a soda ash solution on a slip of paper that had been written in advance with phenolphthalein test solution, and the red words "Chemistry makes life colorful" appeared on it.

For example, when chemical reactions are carried out, such as the combination of carbon monoxide and carbon dioxide, such as potassium permanganate, the eggshell will dissolve when it is put into vinegar, and a small amount of bubbles will be generated.

—Because the school I attended in junior high school focuses on practical and hands-on ability, and often arranges students to participate in various experimental courses, we have conducted many interesting chemistry experiments in the chemistry classroom under the guidance of our chemistry teachers.

Chalk bombs

Before the experiment, the teacher gave each person two pieces of chalk, and we dug a hole of a certain depth at the thick end with the handle of a medical spoonTake a small amount of red phosphorus and potassium chlorate solid according to the ratio of 2:7 into the mortar, mash and mix with a pestle, add an appropriate amount of absolute ethanol, soak the mashed powder fully, and mix evenly with a spoon.

Then use a spoon to add the mixed red phosphorus and potassium chlorate to the dug chalk holes, seal them with white paper and rubber bands, dry them by the teacher, and return them to us three days later.

Place the chalk bomb after dryingSeal a section with white paper and drop it firmly to the ground, you can have a ** effect similar to firecrackers.

Homemade CO2 fire extinguisher

Before the experiment, the teacher will send each of us outA glass container with a side opening and a small plastic bottle, a pack of baking soda and a glass of white vinegarFirst of all, we need to pour baking soda powder into the glass bottle, then fix the plastic cup in the glass bottle with iron wire (the position should be lower than the side opening), pour the white vinegar into the plastic bottle, gently seal the rubber stopper on the bottle mouth, and finally seal the glass bottle mouth tightly with a stopper.

Hold the bottom of the glass bottle with both hands and seal it respectively, and quickly flip the bottle overThe plastic bottle stopper is pushed open by gravity, and the white vinegar inside quickly flows out and mixes with baking soda, so that the reactants gush out from the side opening above the glass bottle, so as to achieve the effect of a fire extinguisher.

Hydrogen**

React with zinc and dilute sulfuric acid to generate hydrogen, collect the generated hydrogen into a plastic bottle with the downward air exhaust method, and turn the bottle upside down after a period of time, light a match, and place the match at the mouth of the bottle to make the hydrogen occur, and the plastic bottle flies upward.

Summary: Some schools only pay attention to the teaching of textbook content and do not pay attention to experimental courses, but in my opinion, experimental courses are not only conducive to improving students' hands-on ability, but also conducive to us to transform the knowledge in textbooks into practice, stimulate our interest in learning, enhance our memory, and are worth promoting.