The properties of a compound are often different from the properties of the elements, this should be explained using water as an example. Concept Introduction:: In the physical change, the material or substance will not change its chemical identity only changes its physical state like solid into liquid or liquid into gas. For example, water changes its physical sate when ice melts into water. In the chemical change, the material or substance will change its chemical identity means there is a new substance formed by the formation heat, energy or gas. For example: hydrogen and oxygen react to form water which is a new substance. A pure substance is composed of two or more type of matter in definite proportion. For examples; ammonia which is composed by hydrogen and oxygen in definite proportion etc Homogeneous mixture is a type of solution where its component means solute and solvent are present as uniform and not visible. Heterogeneous mixture is the type of mixture where the composition of substance is not uniform and the component of mixture also visible.

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Chapter 3, Problem 60AP

Interpretation Introduction

The properties of a compound are often different from the properties of the elements, this should be explained using water as an example.

Concept Introduction:: In the physical change, the material or substance will not change its chemical identity only changes its physical state like solid into liquid or liquid into gas. For example, water changes its physical sate when ice melts into water.

In the chemical change, the material or substance will change its chemical identity means there is a new substance formed by the formation heat, energy or gas. For example: hydrogen and oxygen react to form water which is a new substance.

A pure substance is composed of two or more type of matter in definite proportion. For examples; ammonia which is composed by hydrogen and oxygen in definite proportion etc

Homogeneous mixture is a type of solution where its component means solute and solvent are

present as uniform and not visible.

Heterogeneous mixture is the type of mixture where the composition of substance is not uniform and the component of mixture also visible.

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