Secret ink. Fun chemistry experience at home

ENTERTAINING EXPERIENCES AT HOME
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Secret ink. Chemical experiments

Entertaining experiments in chemistry

Entertaining experiences at home / Chemistry experiments for children

Dissolve some sulfuric acid in water (remember to always pour acid into water, not the other way around!). Write any word on paper with this solution using a pointed stick.

When the solution dries, the inscription will disappear. But it is worth ironing the paper with a hot iron, as black letters appear on it. By the way, written in this way can no longer be deleted.

Author: Shkurko D.I.

We recommend interesting experiments in physics:

▪ The ancestor of the camera

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We recommend interesting experiments in chemistry:

▪ Experiments with carbohydrates

▪ Color pictures using liquid glass (or silicate glue)

▪ Testing fruit juices for sugar

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Martian soil suitable for life 01.12.2017

If humanity ever decides to colonize Mars (and NASA and Elon Musk, for example, have such plans), then we will have to make sure that food can be grown on the Red Planet. This time, a team of scientists from the Wageningen University and Research Center (Netherlands) discovered that earthworms, or earthworms (these creatures make a significant contribution to soil fertility) can live and reproduce in simulated Martian soil.

After the Curiosity rover sent out an analysis of the Martian soil, NASA found that the volcanic soil on the Hawaiian Islands has the closest resemblance to it. Previous studies using this model have had varying success in growing crops. It turned out that potatoes could be grown in special greenhouses on the Red Planet.

Manure is still one of the best fertilizers. Dutch scientists used pig manure in tests: they added it to simulated Martian soil samples and silver quartz sand samples and tried to grow arugula; the researchers then compared the results. To the surprise of scientists, the artificial Martian soil was more "successful".

Then, after the arugula sprouted, the team added another necessary element to some pots - earthworms, or earthworms. These creatures play a key role in revitalizing our planet's soil by digesting dead organic matter and releasing a powerful fertilizer that releases nutrients such as nitrogen and phosphorus. In addition, the worms loosen the soil, allowing air and water to better penetrate into it.

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