Chemistry Quiz: Element, Compound And Mixture! Trivia

An element is a substance made up of only one type of atom. This means that all the atoms in an element have the same number of protons in their nucleus. Elements are the building blocks of matter and cannot be broken down into simpler substances by chemical means. Examples of elements include hydrogen, oxygen, and carbon.

A mixture is a combination of two or more elements or compounds that are physically combined but not permanently bonded together. In a mixture, the substances retain their individual properties and can be separated by physical means, such as filtration or evaporation. This is different from a compound, where elements are chemically bonded together, and an element, which cannot be broken down into simpler substances. Therefore, the correct answer is mixture.

Sodium chloride is considered a compound because it is made of two different elements, sodium (Na) and chlorine (Cl). Compounds are formed when two or more different elements chemically combine. In this case, sodium and chlorine atoms combine to form sodium chloride. Therefore, it is not considered an element like sodium, which is made up of only one type of atom.

A compound is formed when two or more different elements chemically combine together. This means that the atoms of the elements are rearranged and bonded in a specific way to form a new substance with different properties from the original elements. Compounds have a fixed composition and can only be separated into their individual elements through chemical reactions. Therefore, the correct answer is compound.

The given answer is "Compound" because MgO is a combination of two elements, magnesium (Mg) and oxygen (O), which are chemically bonded together. Compounds are substances composed of two or more different elements in fixed ratios, and MgO fits this definition as it is made up of magnesium and oxygen atoms in a 1:1 ratio. Therefore, it is classified as a compound rather than a single element.

CO is the chemical formula for carbon monoxide, which is a compound. A compound is a substance composed of two or more elements chemically combined in fixed proportions. In the case of carbon monoxide, it is made up of one carbon atom and one oxygen atom. Therefore, CO is a compound.

The given answer "Compound" is correct because compounds are substances that are made up of two or more different elements chemically bonded together. In this case, "OH" is the chemical formula for the hydroxide ion, which consists of the element oxygen (O) and the element hydrogen (H) bonded together. Therefore, "OH" is a compound.

Steel is not classified as an element because it is not a pure substance. It is an alloy made up of iron and carbon, as well as other elements in smaller quantities. Elements, on the other hand, are pure substances that cannot be broken down into simpler substances by chemical means. Iron, lead, and copper are all elements because they consist of only one type of atom.

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