20 Questions
What term refers to a mixture that does not have a uniform composition and in which the individual substances remain distinct?
Heterogeneous mixture
What are coffee and corn starch with water types of?
Heterogeneous mixture
Which of the following is an example of a suspension?
Muddy water
What is the term for the jerky random movement of particles in a liquid colloid due to particle collisions?
Brownian motion
What term describes two liquids that separate shortly after being mixed?
Immiscible
What expresses concentration in terms of the number of moles of solvent per liter of solution?
molality
Which of these has units of mol/kg?
molality
Which term correctly classifies a tossed salad or taco?
heterogeneous mixture
Which scatters a beam of light as it passes through?
heterogeneous mixture
Which is not a heterogeneous substance?
soft drink
What are the characteristics of a heterogeneous mixture?
A mixture that does not have a uniform composition and in which the individual substances remain distinct.
What is an example of a substance that exhibits Brownian motion?
Liquid colloids.
What type of mixture is formed by coffee and corn starch with water?
Heterogeneous mixture.
Give an example of a suspension.
Muddy water.
What term describes two liquids that do not mix and separate shortly after being combined?
Immiscible.
What is the unit of molality?
mol/kg
What type of mixture is exemplified by a salad or taco?
heterogeneous mixture
What type of mixture scatters a beam of light as it passes through?
heterogeneous mixture
Which type of mixture can be found in a soft drink?
homogeneous mixture
What property distinguishes molality from molarity?
Molality is based on mass of solvent, while molarity is based on volume of solution.
Study Notes
Chemistry Quiz 1
Mixtures
- A mixture that does not have a uniform composition and in which the individual substances remain distinct is called a heterogeneous mixture.
- Examples of heterogeneous mixtures include coffee and corn starch with water, and a tossed salad or taco.
- Heterogeneous mixtures can be identified by the fact that the individual substances remain distinct and can be separated by physical means.
Suspensions
- A suspension is a type of heterogeneous mixture that contains particles that are large enough to settle out of the mixture over time.
- An example of a suspension is muddy water.
Colloids
- A colloid is a type of mixture that contains particles that are larger than those in a solution but smaller than those in a suspension.
- Colloids exhibit Brownian motion, which is the jerky random movement of particles in a liquid due to particle collisions.
Concentration
- Molality is a unit of concentration that expresses the number of moles of solute per kilogram of solvent.
- Molality has units of mol/kg.
Miscibility
- Two liquids that separate shortly after being mixed are said to be immiscible.
Light Scattering
- Heterogeneous mixtures scatter a beam of light as it passes through.
Chemistry Quiz 1
Mixtures
- A mixture that does not have a uniform composition and in which the individual substances remain distinct is called a heterogeneous mixture.
- Examples of heterogeneous mixtures include coffee and corn starch with water, and a tossed salad or taco.
- Heterogeneous mixtures can be identified by the fact that the individual substances remain distinct and can be separated by physical means.
Suspensions
- A suspension is a type of heterogeneous mixture that contains particles that are large enough to settle out of the mixture over time.
- An example of a suspension is muddy water.
Colloids
- A colloid is a type of mixture that contains particles that are larger than those in a solution but smaller than those in a suspension.
- Colloids exhibit Brownian motion, which is the jerky random movement of particles in a liquid due to particle collisions.
Concentration
- Molality is a unit of concentration that expresses the number of moles of solute per kilogram of solvent.
- Molality has units of mol/kg.
Miscibility
- Two liquids that separate shortly after being mixed are said to be immiscible.
Light Scattering
- Heterogeneous mixtures scatter a beam of light as it passes through.
This quiz assesses understanding of mixtures, suspensions, and colloids in chemistry. It includes multiple-choice questions on concepts such as heterogeneous mixtures and suspensions.
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