Separation of Mixtures Quiz

A student was asked to separate a mixture of salt, sand, and water. They set up a funnel with filter paper that drips into a beaker. Based on the procedure, which physical properties did the student use to separate the salt and sand from the mixture? Select three correct answers.

• volume

• boiling point

• mass

• melting point

• Shape

A student was asked to separate a mixture of salt, sand, and water. They set up a funnel with filter paper that drips into a beaker. Based on the procedure, which physical properties did the student use to separate the salt and sand from the mixture? Select three correct answers.

• volume

• boiling point

• mass

• melting point

• Shape

When you brew coffee using a filter, the coffee grounds remain in the filter, but the brewed coffee passes through. Which separation technique BEST describes this process?

• This is an example of evaporation because the liquid coffee is separated from the grounds.

• This is an example of decantation because the coffee is poured off the grounds.

• This is an example of sieving because the filter separates large particles from small ones.

• This is an example of filtration because the liquid coffee passes through the filter while the grounds do not.

Which of the following is NOT considered a physical property of a substance?

• The ability of a metal to conduct electricity.

• The melting point of ice.

• The tendency of silver to tarnish.

• The density of water.

A scientist is testing a metal with sulfuric acid to determine if it is magnesium, which reacts with sulfuric acid. What observations would MOST LIKELY suggest that a chemical reaction has occurred? Select THREE correct answers.

• formation of a gas

• increase in the mass of the solution

• temperature change in the solution

• solution remains clear and unchanged

Tags

NGSS.MS-PS1-2

A student observed a color change when two clear solutions were combined. What is the MOST LIKELY explanation for this observation?

• The color change indicates a physical change because the solutions remained clear.

• The color change suggests a chemical reaction may have occurred between the solutions.

• The solutions did not undergo any change since they were initially colorless.

• The absence of temperature change means no chemical reaction took place.

Tags

NGSS.MS-PS1-2

When a piece of magnesium is added to a solution of sulfuric acid, bubbles of gas are observed, and the mass of the system decreases. What is the most likely reason for the decrease in mass?

• The magnesium reacted completely, causing a loss of mass.

• The gas produced in the reaction escaped from the container.

• The sulfuric acid was consumed, reducing the total mass.

• The reaction absorbed some of the mass from the surroundings.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which method can be used to separate a mixture of iron filings and sand based on their physical properties?

• evaporation

• chromatography

• magnetic separation

• decantation

What type of mixture is created when sugar is completely dissolved in a cup of tea, and what evidence supports this classification?

• A homogeneous mixture; the sugar dissolves completely and is not visible.

• A heterogeneous mixture; the sugar remains visible and does not dissolve.

• A colloidal mixture; the sugar forms a gel-like substance.

• A suspension; the sugar settles at the bottom over time.

Tags

NGSS.MS-PS1-2

Two students are examining a sample of garden soil to determine its composition. They conclude that the soil is a heterogeneous mixture. Which observation would NOT support this conclusion?

• Some soil particles dissolve in water, while others do not.

• When the soil is left in the sun, it changes color.

• Different layers of soil particles are visible when the sample is placed in a clear container.

• Some soil particles are larger and some are smaller.

Tags

NGSS.MS-PS1-2