A student prepared a snack of raspberries, blueberries, almonds, and powdered sugar. They stored the snack in the refrigerator for an hour. When they came back, the powdered sugar could no longer be seen, but the fruit and nuts did not change their appearance.

What most likely happened to the powdered sugar?

• • The sugar evaporated due to the lower temperature in the refrigerator.

• • The sugar was very dense, so it sank to the bottom of the container.

• • The sugar dissolved because of the moisture in the fruit.

• • The sugar melted into a liquid state.

Tags

NGSS.MS-PS1-2

A student mixes water and sugar. The mass and volume of the samples were determined before mixing and recorded in a chart.

What statement is true about the solution? (Both Substances)

• • The mass of the solution is 57 mL.

• • The mass of the solution is 92 g.

• • The volume of the solution is 22 mL.

• • The volume of the solution is 92 g.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Describe the change that occurs when lime juice is mixed with water.

• • The mass of the lime juice decreases.

• • The water changes state and becomes a solid.

• • The volume of the water decreases.

• • The lime juice dissolves in the water.

Tags

NGSS.MS-PS1-2

Which mixture could be separated with a strainer?

• • Pebbles and water

• • Sugar and water

• • Soap and water

• • Salt and water

The table shows the ingredients for five different mixtures.

In which mixtures do all the ingredients maintain their physical state? Select more than one answer. (3)

• Mixture 1

• Mixture 2

• Mixture 3

• Mixture 4

• Mixture 5

Below lists examples of mixtures and solutions. Identify which row shows the mixtures and which shows the solutions.

Groups:

(a) Mixture

,

(b) Solution

• Fruit salad

• Lemonade

• Salt water

• Oil and water

• Iron filings and sand

• Sweet tea

A mixture of beads was placed in a container, as shown below. The beads are of various sizes, and each one is made of plastic, glass, or steel. The mixture would be easy to separate because all the beads--- (5.5B)

• are less dense than water

• are solids

• have the same mass

• are attached to a magnet

Tags

NGSS.MS-PS1-2

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? (5.5C)

• 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?

Tags

NGSS.MS-PS1-2

A student stirs 15 grams of each substance listed below into 200 milliliters of water to form four different mixtures. The student then tries to separate the water from each mixture by pouring the mixture through a kitchen tea strainer. Which mixture can the student separate most easily with the strainer? (5.5B)

• Salt and water

• Gravel and water

• Shampoo and water

• Sugar and water

Tags

NGSS.MS-PS1-2

The mixture shown here -

• Maintains its physical properties when combined

• Dissolves after being stirred together

• Will evaporate after a certain period of time

• Cannot be separated into ingredients

Tags

NGSS.MS-PS1-2