Are elements and compounds pure substance or mixture’s?

In explanation.

Explanation:

Are elements and compounds pure substances or mixtures?

-A material composed of two or more substances is a mixture. Elements and compounds are both examples of pure substances. A substance that cannot be broken down into chemically simpler components is an element.

Are elements pure substances or mixtures?

-Mixtures can be classified as homogeneous or heterogeneous. Elements and compounds are both examples of pure substances. Compounds are substances that are made up of more than one type of atom. Elements are the simplest substances made up of only one type of atom.

Are compounds pure substances or mixtures?

-Mixtures are physical combinations of two or more elements and/or compounds. Mixtures can be classified as homogeneous or heterogeneous. Elements and compounds are both examples of pure substances.

Hope this helps.

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.

water at room temperature is flowing through a pipe with pressure taps located 10 ft apart along one section of the pipe, which are connected to a mercury (s=13.6) manometer.