How are grease and gasoline chemically similar?

What is the difference between oil and gasoline?

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The molecules in gasoline are smaller than in oil.

What are molecules Molecules are the smallest particles of a substance. They are made up of atoms. Gasoline molecules consist of five to eight, heating oil molecules of about twelve connected carbon atoms. Two or three hydrogen atoms are attached to each carbon atom. Gasoline and oil therefore belong to the chemical class of hydrocarbons. Which burns better? Petrol. Because its molecules are light, they constantly evaporate. This creates gaseous gasoline vapors above the liquid, which together with the oxygen in the air form a combustible, highly explosive mixture. Heating oil and the chemically similar petrol, on the other hand, do not evaporate. An atomizer (in the oil burner) or a wick (in the petrol lamp) is required for combustion. Why does heating oil stink but salad oil doesn't? Heating oil is a mineral oil. It is obtained from bad-smelling petroleum, but salad oil from pleasant-smelling plants. But both give water-insoluble stains! Correct. All fats, oils and petrol are hydrophobic, which means that they are harmful to water. They repel water. But they are perfectly soluble with one another. That is why you can remove oil and grease stains with petroleum ether.

Why does heating oil stink but salad oil doesn't? Heating oil is a mineral oil. It is obtained from bad-smelling petroleum, but salad oil from pleasant-smelling plants.

But both give water-insoluble stains! Correct. All fats, oils and petrol are hydrophobic, which means that they are harmful to water. They repel water. But they are perfectly soluble with one another. That is why you can remove oil and grease stains with petroleum ether.

By the way! Find out more here

Knowledge before 8 shows: A fat explosion

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