Question

Carefully follow the procedure listed in Day 1 of Lesson 21.

Use the materials indicated (if you have to substitute something else, be sure to note that with your data).
Fill in the chart below by classifying the materials as elements,
A) compounds,
B) heterogeneous mixture,
C) homogeneous mixture

Answer 1

Matter:

Anything which occupy area ,have mass and can exist in the phases of substances like gas ,liquid and solid phase.

Matters are of two types:

a) Pure substances:

The property of substances are same through out the volume ans it is invariant with place.It have same chemical composition through out.

These are further divided in two parts :

1. Element :

Element can not be separate in to other element by chemical process.These are the fundamental for every element.

2. Compound:

Compound can be separate by chemical process.

Ex : Oxygen element(O), Aluminium element (Al)

b) Mixture :

1)Homogeneous mixture:

It have same composition through out.It is also known as solution.

Ex: Salt water solution,milk water solution

2)Heterogeneous :

It do not have same composition through out

Ex: Mud -water solution,Soup of vegetables.