Question

1.
What is meant by a pure substance?
2. List the point of differences between homogeneous & heterogeneous mixture?
logifor the following into elements comnounds & mixture.​

Answer 1

Answer:

1. A substance that has a fixed chemical composition throughout is called a pure substance such as water, air, and nitrogen. A pure substance does not have to be of a single element or compound.

2. A homogeneous mixture is a solid, liquid or gaseous mixture that has the same proportions of its components throughout any given sample. Conversely, a heterogeneous mixture has components in which proportions vary throughout the sample.

Explanation:

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Answer 2

Answer:

1-A substance that has a fixed chemical composition throughout is called a pure substance such as water,air and nitrogen. A pure substance does not have to be of a single element or compound.

2-Homogeneous mixture.

- they have uniform composition

-The components of homogeneous mixture

are not physically distinct.

2 Heterogeneous mixture

-They have non- uniform composition.

-They have no visible boundaries of separation

between the constituent.