Copper plating of nails. Fun chemistry experience at home

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Copper plating of nails. Chemical experiments

Entertaining experiments in chemistry

Entertaining experiences at home / Chemistry experiments for children

Clean the nail to a shine with sandpaper and rinse in gasoline.

Then dip into the solution: 250 ml of water, 2 g of copper sulfate and 2 drops of sulfuric acid. After a few minutes, the nail will look like copper.

Author: Shkurko D.I.

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Insomnia leads to diabetes 13.09.2018

Scientists have found links between sleep deprivation, increased food intake, reduced physical activity and an increased risk of developing type 2 diabetes. A team of researchers from the Toho Graduate School of Medicine in Japan explained: "It is not clear what caused the glucose intolerance: changes in food intake and energy expenditure, or lack of sleep."

The researchers studied two groups of mice: one group stayed awake for six hours each night, and the other was able to sleep at will. For both groups, scientists offered unlimited amounts of fatty foods and sugary water, mimicking the food basket of modern humans. In addition, all animals had limited opportunities for physical activity.

The researchers measured glucose and fat levels in the liver immediately after the experiment. Blood glucose levels were significantly higher in the sleep deprivation group than in the control group. Triglyceride (fat) levels and liver glucose production also increased after one night of sleeplessness. Elevated triglyceride levels in the liver are associated with insulin resistance (the inability of the body to properly process insulin). In addition, lack of sleep has altered the expression of enzymes that regulate liver metabolism. These findings suggest that even six hours of sleep deprivation in one night can have serious effects on the liver and metabolism.

Scientists are going to explore possible ways to prevent such consequences.

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