Drinking alcohol (ethanol) is a not a mixture, but a pure substance that happens to be a liquid at room temperature and typical atmospheric pressure. It’s about 43% ethanol, the rest is mostly water (which makes it a mixture).

Butane

C₄H₁₀

The molecular formula of butane is C 4H 10. This is the actual number of atoms of each element in a molecule of butane. This formula does not show the simplest whole number ratio because each number can be divided by 2. This gives the empirical formula of butane – C 2H 5.

: a chemical formula that gives the total number of atoms of each element in each molecule of a substance — compare structural formula.

What is 70/30 IPA and The Best Uses? 70/30 IPA (Isopropyl Alcohol) is a low toxicity solvent made of a mix of 70% pure isopropyl alcohol and 30% water. This is generally the mixture used in first aid products such as rubbing alcohol.

Answer: A 70% alcohol is a homogeneous mixture.

It’s almost pure cellulose with traces of lignin, techically a mixture but can be treated as pure substance for most purposes.

Colloids and Suspensions milk, you are drinking a mixture of water, fats, proteins, and other substances. Milk is a colloid. A colloid is a heterogeneous mixture that, like a solution, never settles.

Elements, mixtures and compounds Elements are substances that are made from one type of atom. An element cannot be broken down into any other substance. A mixture is made by simply mixing together elements and compounds. No new chemical bonds are formed.