15 Questions
What happens to the solubility of a substance as the temperature increases?
Increases
What is a characteristic of a pure substance?
It has a definite melting and boiling point
Why does purity matter when making medical drugs or food flavorings?
To ensure safety by preventing harmful substances
What happens to the melting point of a solid when it contains impurities?
Falls
Why are gases unusual in terms of solubility compared to other substances?
Their solubility decreases with temperature
What is the process used to separate a mixture of liquids based on their different boiling points?
Distillation
How does distillation work in separating water and alcohol?
Heating the mixture to its boiling point
How are immiscible liquids separated in a laboratory setting?
Using a separating funnel
What is the term used for liquids that do not mix together?
Immiscible
Which technique involves the cooling of a gas back into a liquid for collection?
Crystallization
What is the main characteristic of a mixture?
Easily separable substances
Which of the following is an example of a pure substance?
Table salt (sodium chloride)
What is a solution?
A mixture where one substance dissolves fully into another
In a solution, what is the role of the solute?
Does the dissolving into the solvent
Which of the following best describes the properties of a mixture?
The properties average out the properties of substances mixed
Test your knowledge on pure substances with this quiz! Learn what constitutes a pure substance and why purity is important in various applications.
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