Question

Write true or false for each statement. 1.All pure substances have characteristic melting and boiling points.
2.Milk is an emulsion.
3.A heterogeneous mixture has a uniform composition throughout the mixture.
4.The constituents of a mixture can only be separated by chemical means.
5.Handpicking can be used as a separation technique if the particle size of the constituents of the mixture is the same.​




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Answer 1

Answer:

1. TRUE

2. TRUE

3. FALSE

4. TRUE

5. FALSE

Explanation:

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Answer 2

Answer:

1. All pure substances have characteristic melting and boiling points. True

2. Milk is an emulsion. True

3. A heterogeneous mixture has a uniform composition throughout the mixture. False because a heterogeneous mixture is a mixture in which the composition is not uniform throughout the mixture.

4. The constituents of a mixture can only be separated by chemical means. False because it is separated by chemical means and physical means.

5. Handpicking can be used as a separation technique if the particle size of the constituents of the mixture is the same. False because the particle size of the constituents of the mixture is not same.