What is the best example of a pure substance
Gold
Milk
Air
Peanuts
The best example of a pure substance from the options given is gold. Gold is a chemical element (Au) that exists in its pure form, meaning it consists of only gold atoms and does not contain any other elements or compounds. Milk contains various components such as water, proteins, fats, and sugars, so it is not a pure substance. Air is a mixture of different gases, including nitrogen, oxygen, carbon dioxide, and others, so it is also not a pure substance. Peanuts are a combination of different organic compounds such as proteins, carbohydrates, fats, and minerals, so they are also not a pure substance.
The best example of a pure substance among the options listed is gold. Gold is considered a pure substance because it is composed of only one type of atom, specifically gold atoms. Milk, air, and peanuts are not considered pure substances because they are composed of multiple types of atoms or molecules.
The best example of a pure substance out of the options you provided is gold.
A pure substance is a material that consists of only one type of atom or molecule. Gold is an element with the chemical symbol Au and atomic number 79. It is naturally occurring and can be found in its pure form, which means it contains only gold atoms.
To determine which substance is a pure substance, you can consider the composition of the material. In the case of gold, it is made up of only one type of atom, so it is a pure substance. On the other hand, milk and peanuts are both mixtures of various compounds and elements, which means they are not pure substances. Air is a mixture of different gases, so it is also not a pure substance.
In summary, out of the options you provided, gold is the best example of a pure substance because it is composed of only one type of atom.