purity and formulations

Question 1

what is a pure substance in chemistry?

Answer 1

A pure substance contains only one compound or element throughout and is not mixed with anything else

Question 2

how can boiling and melting points indicate purity

Answer 2

• A pure substance melts and boils at a specific temperature.
• Impurities lower the melting point and increase the boiling point.

Question 3

how do you test the purity of a substance?

Answer 3

Measure its melting/boiling point and compare it with the known value for the pure substance. The closer the values, the purer the substance

Question 4

what happens to the melting point of a substance has impurities

Answer 4

The melting point lowers when impurities are presen

Question 5

what happens to the boiling point when a substance has impurities

Answer 5

The boiling point increases when impurities are present.

Question 6

what are formulations

Answer 6

Formulations are useful mixtures made with exact amounts of each component, designed for a specific purpose.

Question 7

why are formulations important

Answer 7

Each part of a formulation is measured carefully to ensure the final product has the correct properties to function properly.

Question 8

how are formulations made

Answer 8

By following a formula that ensures the right balance of ingredients for the intended use