przemiana chemiczna

Human behavior can be reduced to a series of chemical reactions.

Fire is a chemical reaction that gives off light and heat.

Many chemical reactions produce energy in the form of heat.

Also, it did not explain a number of chemical reactions.

Many chemical reactions that appear not to take place in fact happen very slowly.

It measures the heat of chemical reactions or physical changes.

That may have also been some chemical reaction, but I rather doubt it.

A number of chemical reactions have water as a product.

In other words, a chemical reaction could only proceed if the system lost energy.

Love usually has something to do with the chemical reactions in the brain.