In general, polar molecules. Oil, a no polar substance, does not dissolve in water.
polar, covalent, and ionic substances
Salt and Sugar dissolve in water.
Water is a polar substance, which means that any other polar substances will dissolve in it. The opposite is mineral turpentine which is non-polar so all non-polar substances dissolve in it.
Some hydrophobic substances are soluble in water (ex.: proteins).
No, many substances do not dissolve in water.
water's inherent ability to dissolve other substances
Different types of powder
Giant covalent substances like diamond tend not to dissolve in anything. Non polar molecular substances such as hydrocarbons are not attracted to water.
Nutilite's vitamins dissolve in water.
Salt and Sugar dissolve in water.
I'm not sure what your asking but the term for substances that are unable to dissolve in water are called unsoluable.
Water does not dissolve everything. Some substances dont mix with water. Those are hydrophobic substances, ex: oil molecules
Many different substances dissolve easily in water, but there are some which don't, particularly oily substances. Soap makes these substances dissolve in water.
Water is a polar substance, which means that any other polar substances will dissolve in it. The opposite is mineral turpentine which is non-polar so all non-polar substances dissolve in it.
sugar, salt
insoluble
substances that dissolve in water include, sugar, salt and others.
Some hydrophobic substances are soluble in water (ex.: proteins).