14 Questions
What is the definition of an impurity?
A substance that contains other elements or compounds
In a solution with a high concentration of salt, what does this indicate?
Large amount of solute in solvent
How does the color of orange juice change when a large glass of water is poured into it?
The color becomes lighter
What does chromatography aim to accomplish?
Separating compounds of a mixture
On what principle does chromatography work?
Concentration of compound
What is one of the applications of chromatography?
Forensic analysis
In a solution, what role does the solvent play?
Liquid in which the solute dissolves
What is the main difference between a pure substance and an impurity?
Pure substances are made from one type of element or compound, while impurities contain other elements or compounds.
In a solution with a high concentration of salt, what does this suggest about the amount of solute present?
The amount of solute is very high.
Why does the color of orange juice become lighter when water is added to it?
The amount of water added dilutes the orange juice.
Which statement accurately describes the process of chromatography?
Chromatography separates substances dissolved in a liquid by allowing the liquid to flow through a chromatogram.
What does chromatography aim to accomplish?
To separate substances dissolved in a liquid from each other.
Which principle does chromatography primarily work on?
Separating compounds of a mixture
What is NOT an application of chromatography?
Food preservation
Study Notes
- Pure substance is made from one type of element or compound.
- An impurity is a substance that contains other elements or compounds.
- Solute is a substance that dissolves in a solvent, while a solvent is the liquid in which the solute dissolves, resulting in a solution.
- A high concentration of salt in a solution indicates a large amount of solute in the solvent.
- Mixing a glass of orange juice with a glass of water will result in the orange juice becoming lighter due to the higher amount of water.
- Chromatography is a method to check the number of solutes in a solvent and involves separating substances dissolved in a liquid by allowing the liquid to flow through a chromatogram.
- Chromatography works based on the principles of compound concentration and separating compounds in mixtures.
- Applications of chromatography include drug testing, forensic analysis, and food testing.
Test your knowledge on pure substances, impurities, solutes, solvents, and solutions. Understand the concept of concentration in a solution with a high salt concentration. Explore key terms related to mixtures and impurities in this quiz.
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