Classify each of the following as Elements

Classify each of the following as Elements (E), Compounds (C), or Mixtures (M). Write the letter X if it is none of these. 1. Popcorn 2. Sugar 3. Air 4. Concrete 5. Clorox 6. Mercury 7. Bronze 8. Wood 9. Diamond 10. Ink 11. Salt 12. Platinum 13. Justice 14. Brass 15. Water 16. Gold 17. Chocolates 18. Diesel Oil 19. Shampoo 20. Isopropyl ___

The Correct Answer and Explanation is:

Here’s the classification of each substance:

1. Popcorn – M (Mixture): Popcorn is a mixture because it contains various components like kernels and possibly oil or butter.
2. Sugar – C (Compound): Sugar, typically sucrose (C₁₂H₂₂O₁₁), is a compound made of carbon, hydrogen, and oxygen atoms chemically bonded.
3. Air – M (Mixture): Air is a mixture because it consists of different gases like oxygen, nitrogen, and trace amounts of others like carbon dioxide.
4. Concrete – M (Mixture): Concrete is a mixture of cement, water, sand, and aggregate, all mixed together physically but not chemically bonded.
5. Clorox – C (Compound): Clorox is a brand of bleach that typically contains sodium hypochlorite (NaOCl), which is a compound.
6. Mercury – E (Element): Mercury is a pure element with the symbol Hg and atomic number 80.
7. Bronze – M (Mixture): Bronze is an alloy (a mixture of metals), primarily composed of copper and tin.
8. Wood – M (Mixture): Wood is a mixture of cellulose, lignin, water, and other substances that make up the structure of the tree.
9. Diamond – E (Element): Diamond is a form of carbon (C), which is a pure element.
10. Ink – M (Mixture): Ink is a mixture of water, pigments, and other chemicals used to provide color and consistency.
11. Salt – C (Compound): Common table salt is sodium chloride (NaCl), a compound made of sodium and chlorine atoms chemically bonded.
12. Platinum – E (Element): Platinum is a pure element with the symbol Pt and atomic number 78.
13. Justice – X: Justice is a concept, not a physical substance, so it doesn’t fall under element, compound, or mixture.
14. Brass – M (Mixture): Brass is an alloy made primarily of copper and zinc, which are mixed physically.
15. Water – C (Compound): Water (H₂O) is a compound made of hydrogen and oxygen atoms chemically bonded.
16. Gold – E (Element): Gold is a pure element with the symbol Au and atomic number 79.
17. Chocolates – M (Mixture): Chocolates are a mixture of cocoa, sugar, milk, and other ingredients that are not chemically bonded in a fixed ratio.
18. Diesel Oil – M (Mixture): Diesel oil is a mixture of hydrocarbons and other substances used as fuel.
19. Shampoo – M (Mixture): Shampoo is a mixture of water, detergents, fragrances, and other chemicals used for cleaning.
20. Isopropyl – C (Compound): Isopropyl alcohol (C₃H₈O) is a compound made up of carbon, hydrogen, and oxygen atoms chemically bonded.

Explanation:

• Elements (E) are pure substances made of only one type of atom, like gold, mercury, and diamond.
• Compounds (C) consist of two or more different elements chemically bonded in fixed proportions, like sugar (sucrose), water, and salt.
• Mixtures (M) contain two or more substances physically combined, where the components retain their individual properties. Air, popcorn, wood, bronze, and ink are all mixtures.
• Justice is an abstract idea and doesn’t fit into any of these categories. Therefore, it’s classified as X.