Mono atomic gaseous elements of noble gases (group 18)
No, organic molecules do not have to contain calcium. Organic molecules are compounds primarily composed of carbon, hydrogen, and oxygen. Calcium is an inorganic element and is not typically found in organic molecules.
Carbohydrates
All organic molecules contain carbon atoms.
Organic compounds contain carbon and also usually hydrogen.
Molecules that contain carbon, hydrogen, and oxygen are known as organic molecules. These molecules are commonly found in living organisms and are the building blocks of many essential biological compounds.
There are tens of thousands of them. Perhaps the biggest category of such molecules are called the hydrocarbons, which are compounds of carbon and hydrogen. Another category is the organic compounds which are compounds containing carbon; most of these also contain hydrogen.
Carbides, but there are sooooo many possible carbon molecules that it's unlikely you'll come across that term. All organic compounds and many inorganic compounds (carbonates, carbides) contain carbon.
Ionic compounds do not contain molecules. The representative particle of an ionic compound is called a formula unit. Molecules are the representative particles of a covalent compound.
Nutrients are chemical compounds; they contain molecules - and the molecules are formed from chemical elements.
Organic compounds are covalently bonded molecules that contain carbon, hydrogen, and sometimes other elements like oxygen, nitrogen, sulfur, or phosphorus. Oxygen is not always present in organic compounds, but it is a common element found in many organic molecules.
Yes, a mixture contains different molecules of substances that are combined physically but do not chemically bond with each other. These molecules retain their individual properties within the mixture.
All compounds are molecules because they are made up of two or more atoms chemically bonded together. However, not all molecules are compounds; for example, an element like oxygen gas (O2) consists of molecules made up of two oxygen atoms but does not contain different elements bonded together like a compound does.