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ionic molecules dissolve the most. but some polar covalent molecules also do dissolve in water.
Polyoxyethylene would be considered organic - it has two carbon molecules as a backbone. When in doubt, you can look at the last three letters of the chemical name - "ene" is the suffix given to an organic molecule in which there is a double covalent bond between two carbon molecules.
Covalent.
Discrete covalent molecules. eg CO2, N2,CH4. Covalent networks. eg SIO2
The DNA backbone is made of phosphate group and deoxyribose, and they are held together by covalent bonding.
The molecules of the sugar-phosphate backbone in DNA are joined together by covalent bonds (known as phosphodiester bonds).
Molecules are covalent.
DNA ligase
Covalent molecules with small amounts of argon which is monatomic. All molecules are covalent. Ionic compounds form crystals, not molecules.
ionic molecules
Molecules with covalent bonds are generally formed by nonmetals.
Nonmetals produce covalent molecules.
Particles formed from the covalent bonding of atoms are called molecules.
Topoisomerase
The sugar-phosphate backbone of DNA is made up of deoxyribose (a sugar) and phosphate.
Most are Covalent
Molecules are made up of covalent bonds; however, search "ionic molecules" for more info.