Organic chemistry

Which element is the main element in organic chemistry?

• Carbon

• Oxygen

• Hydrogen

• Halogens

• Sulfur

Виды цепей в органических соединениях

• Простая

• Разветвленная

• Замкнутая

• С двойной связью

• Все

Which one is not the use of organic compounds

• Food

• Fuel

• Machine industry

• Pharmaceutical

Organic compounds have

• Ionic bonds, large molecules, long chains or cycles

• Covalent bonds, small molecules, long chains or cycles

• Covalent bonds, large molecules, long chains or cycles

• Ionic bonds, small molecules, long chains or cycles

Main sources of organic compounds are

• Oil, ores, living organisms

• Oil, minerals, coal

• Oil, coal, gas, water

• Living organisms, oil, coal, gas

• Coal, gas, minerals

Isomers are

• Differect compounds that have the same structural formula

• Differect compounds that have the same molecular formula

• Differect compounds that have the same molecular and structural formula

• The same compounds that have the same structural formula