Solutions and Mixtures Quiz

What change occurs when lemon juice is added to water?

• The mass of the lemon juice decreases.

• The water becomes a solid.

• The lemon juice dissolves and spreads out evenly in the water.

• The volume of the water decreases.

Tags

NGSS.MS-PS1-2

When a powdered drink mix was added to water, the liquid turned orange. A student decided the taste was too strong, so he poured out half of the liquid and added more water. Which of the following most likely occurred when more water was added?

• The physical state changed.

• The orange color became lighter.

• The liquid had a sweeter taste.

• None of the above.

A student stirs lemon juice and sugar into a glass of water. Why is this drink considered a solution?

• The lemon juice and sugar dissolve in the water.

• The water changes color.

• The student stirs the mixture.

• The lemon juice and sugar change the taste of the water.

Tags

NGSS.MS-PS1-2

Students are classifying substances. Which of the following substances is a solution?

• Sand and water

• Soil and water

• Fruit salad

• Sugar and water

A beaker with 115 ml of solution has a temperature of 21°C. The solution contains 5 g of salt and 115 ml of water. Students added two ice cubes to the solution and stirred the solution with a stirring rod. Which properties of the solution changed as the ice cubes melted in the solution?

• The color and physical state of the solution.

• The temperature, mass, and volume of the solution.

• The volume, temperature, and mass of the salt in the solution.

• The physical state and temperature of the solution.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A student adds 10 grams of four different powdered solids into four different beakers. The student then adds 100 mL of water to each beaker, stirs the mixtures, and allows them to sit for half an hour before recording observations. Which question is the student most likely trying to answer with this investigation?

• At what water temperature do the substances dissolve?

• How much water is needed to cause a substance to change state?

• What causes a substance to sink when put in water?

• Which substances dissolve in water?

During an investigation, several students make statements about solutions. Which statement is NOT true?

• When salt is dissolved in water, parts of the solution taste saltier than others.

• When sugar dissolves in water, the sugar is evenly spread out through the solution.

• Solutions can also be called mixtures.

• Heating the water first, causes salt to dissolve faster.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which diagram shows what the student most likely observed in each of the beakers after 5 minutes?

• Beaker R: Coin, Beaker S: Powdered drink mix, Beaker T: Lamp oil

• Beaker R: Lamp oil, Beaker S: Coin, Beaker T: Powdered drink mix

• Beaker R: Powdered drink mix, Beaker S: Lamp oil, Beaker T: Coin

• Beaker R: Coin, Beaker S: Lamp oil, Beaker T: Powdered drink mix

Tags

NGSS.MS-PS1-2