Trivia On Elements And Compounds! Quiz Questions

Explanation
Metals have several properties including conductivity, malleability, ductility, being solid at room temperature, and having luster. Conductivity refers to the ability of metals to conduct heat and electricity. Malleability refers to their ability to be hammered or pressed into different shapes without breaking. Ductility refers to their ability to be stretched into wires. Metals are solid at room temperature, unlike other elements such as gases or liquids. Finally, metals have luster, meaning they have a shiny appearance when polished.

Explanation
Sodium chloride, commonly known as table salt, is indeed made up of two elements: sodium and chlorine. Sodium is a highly reactive metal, while chlorine is a toxic gas. When combined, they form a stable compound known as sodium chloride. This compound is essential for various biological processes and is commonly used as a seasoning and preservative in food. Therefore, the statement "Sodium chloride is made of two elements" is true.

Explanation
Salt is important to the body because it is essential for various bodily functions, including maintaining proper fluid balance, transmitting nerve impulses, and contracting muscles. Additionally, salt has been used as currency in history due to its scarcity and value. Therefore, the correct answer is "all of the above" as salt is both important to the body and has been used as currency in the past.

Explanation
Potassium is an element because it is a pure substance that cannot be broken down into simpler substances by chemical means. It is represented by the symbol K in the periodic table and is classified as an alkali metal. Potassium is a highly reactive metal that is essential for various biological processes in the human body, such as nerve function and muscle contractions.

Explanation
Plutonium is indeed an element. It is a radioactive, silvery-gray metal that belongs to the actinide series of elements. It is symbolized by Pu on the periodic table and has an atomic number of 94. Plutonium is primarily known for its use in nuclear reactors and the production of nuclear weapons. It was first synthesized in 1940 and is artificially produced by bombarding uranium-238 with neutrons. Plutonium is highly toxic and poses significant health risks if not handled properly.

Explanation
Mercury is a metal. It is a chemical element with the symbol Hg and atomic number 80. It is classified as a transition metal and is the only metal that is liquid at room temperature. Therefore, the statement "Mercury is not a metal" is incorrect.

Explanation
Mixing chlorine and sodium would actually result in the formation of sodium chloride, not chloride sodium. Sodium chloride is a compound commonly known as table salt, which is formed when chlorine gas reacts with sodium metal. Therefore, the correct answer is False.

Explanation
The statement "Compounds are made of less than 2 elements" is false. Compounds are substances composed of two or more different elements chemically bonded together. This means that compounds always consist of at least two elements. Therefore, the correct answer is False.

Explanation
Argon is a noble gas because it belongs to the group of elements known as noble gases, which are characterized by their stable and unreactive nature. Noble gases have a full outer electron shell, making them highly stable and unlikely to form chemical bonds with other elements. Argon, with its full outer electron shell, exhibits these properties, making it a noble gas.