Question

In which row are the substances correctly classified
A.Element-brass; compound-sulfur; mixture-water
B.Element-sulfur; compound-brass; mixture- water
C.Element-sulfur; compound- water; mixture-brass
D.Element-water; compound-sulfur; mixture-brass

Answer 1

Hint: To answer this question, you should recall the concept of different types of materials. The material can be classified into three types: elements, compounds and mixture. Elements are pure substances, compounds are a mixture of elements in a definite proportion and mixtures are impure substances with elements mixed together in any composition.

Complete step by step answer:
-Elements are substances that are made from a single type of atom. An element cannot be broken down into any other substance. These act as basic building blocks and everything in the universe is made from these. Examples include carbon, sulfur, oxygen, iron, copper, aluminium. Elements are generally denoted by their symbols.
-Compounds are substances that are formed from atoms of different elements that are connected by chemical bonds. The compounds can be separated into its constituent elements by a chemical reaction. Common examples are water \[({H_2}O),\] sodium chloride, methane. Compounds are denoted by the chemical formula.
-A mixture is formed through simply mixing of elements or compounds. No new chemical bonds are formed. Mixtures can be separated using physical techniques for example filtration, chromatography, evaporation, magnetisation, flotation and distillation. An example of moisture is an alloy like brass or bronze formed by mixing of different metals.

Hence, the correct option is option C.

Note:
Make sure you remember the difference between homogeneous and heterogeneous Mixture.

Homogeneous mixture	Heterogeneous mixture
It has a uniform composition	It has a non-uniform composition
It has only one phase	There are two or more phases
It can’t be separated physically	It can be separated physically
‘homo’ means the same	‘hetero’ means different
Example: a mixture of alcohol and water	Example: a mixture of sodium chloride and sand