EVERYDAY SCIENCE

Detailed explanation-1: -Hence the combination of pasta and tomato sauce is classified as a mixture. B. Aluminum foil is composed of aluminum atoms. Hence it is classified as a pure substance.

Detailed explanation-2: -Pasta is made from a mixture of water and semolina flour. Semolina is a coarse-ground flour from the heart, or endosperm, of durum wheat, an amber-colored high protein hard wheat that is grown specifically for the manufacture of pasta.

Detailed explanation-3: -Answer and Explanation: Tomato juice is technically a suspension or a heterogeneous mixture. Tomato juice is made up of fine solid particles from the flesh of the tomato fruit. Shining a light on a glass of tomato juice would disperse the light because it is reflected off the suspended solid particles.

Detailed explanation-4: -The combination of pasta and water must, therefore, be a heterogeneous mixture as it is a mixture of two substances where each substance is easily identified by the naked eye.

Detailed explanation-5: -A pure substance consists of only a single type of atom or molecule, as ketchup is a combination of many ingredients such as sugar, vinegar, tomato paste, and others, it is a mixture, not a pure substance.