A student is given a sample of an unknown mixture containing sand, salt, and iron filings. Design a step-by-step procedure to separate all three components.

Use a magnet to remove iron filings, dissolve the salt in water and filter out the sand, then evaporate the water to recover the salt.

Add acid to react with the salt, then filter the sand and iron.

Heat the mixture to melt the sand, then pour off the salt and iron.

Use chromatography to separate all components.

A student is given a sample of an unknown substance. Design a procedure using at least two physical properties to determine whether the sample is a metal or a nonmetal.

Measure the mass and volume to calculate density, and observe if the sample is shiny and malleable.

Test if the sample reacts with acid and measure its temperature.

Observe the color and test for solubility in water.

Measure the boiling point and check for magnetic properties.

You are given a mixture of sand and salt. Describe a step-by-step method to separate the two substances based on their physical properties.

Add water to dissolve the salt, filter out the sand, then evaporate the water to recover the salt.

Use a magnet to remove the salt, then filter the sand.

Heat the mixture to melt the sand, then pour off the salt.

Add acid to react with the salt, then filter the sand.

A student notices that when two clear solutions are mixed, a solid forms and settles at the bottom. What type of change has occurred, and what evidence supports this conclusion?

Chemical change; a precipitate forms indicating a new substance

Physical change; a new state is formed

Physical change; the solutions are just mixed

Chemical change; the temperature decreases

Given a sample of liquid, how would you determine if it is a pure substance or a mixture? Outline your reasoning.

Measure its boiling point; a pure substance has a constant boiling point, while a mixture boils over a range.

Observe its color; mixtures are always colored.

Test its density; mixtures have higher density.

Check if it reacts with water; pure substances do not react.

A student is tasked with identifying an unknown white powder. Which combination of tests would best help distinguish between baking soda (sodium bicarbonate) and table salt (sodium chloride)?

Add vinegar to observe fizzing and test conductivity in solution

Test solubility in water and observe color

Measure melting point and check for magnetic properties

Observe odor and test for flammability

Explain how you could use both physical and chemical properties to identify an unknown element from a set of samples.

Measure density and observe reaction with acid to compare with known values.

Only measure the mass of the sample.

Observe the color and shape of the sample.

Test for solubility in water only.

A student heats a blue solid and observes that it turns white and releases a gas. How can the student determine if this is a chemical or physical change? Provide reasoning.

The color change and gas release suggest a chemical change because new substances are formed.

The change is physical because only the state changes.

The change is physical because the color changes.

The change is chemical because the temperature increases.

You are given a sample of an unknown liquid. Describe a logical sequence of tests you would perform to determine its physical and chemical properties.

Measure boiling point, density, and test reactivity with acid.

Chemistry Honors Review - Properties and Changes of Matter

Authored by Marie Rivera

Science

11th Grade

NGSS covered

Used 5+ times

Chemistry Honors Review - Properties and Changes of Matter

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is an example of a physical change?

Burning a piece of paper

Dissolving sugar in water

Rusting of iron

Baking a cake

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which property is considered an extensive property of matter?

Density

Boiling point

Mass

Color

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which best describes a chemical property?

Melting point

Ability to conduct electricity

Reactivity with acid

Solubility in water

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which process represents a chemical change?

Freezing water

Sublimation of dry ice

Digesting food

Melting gold

A student observes that a substance has a shiny appearance, is malleable, and conducts electricity. Which type of matter is the student most likely observing?

Nonmetal

Metalloid

Metal

Noble gas

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a mixture?

Sodium chloride

Air

Water

Carbon dioxide

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which statement best explains why boiling is a physical change?

It produces a new substance.

It changes the chemical composition.

It only changes the state of matter.

It involves a chemical reaction.

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Chemistry Honors Review - Properties and Changes of Matter

Which of the following is an example of a physical change?

Which property is considered an extensive property of matter?

Which best describes a chemical property?

Which process represents a chemical change?

A student observes that a substance has a shiny appearance, is malleable, and conducts electricity. Which type of matter is the student most likely observing?

Which of the following is a mixture?

Which statement best explains why boiling is a physical change?

Which of the following is an example of an intensive property?

Which separation technique would be most effective for separating a mixture of sand and iron filings?

Which method would best separate a mixture of two liquids with different boiling points?

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