Reach for the STAARs - 5.5BC

The table lists the ingredients of five different mixtures. In which mixtures do all the ingredients maintain their physical state?

• Mixtures 3 and 4 only

• Mixtures 1, 3, and 4

• Mixtures 1, 2, and 5

• Mixtures 2 and 5 only

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?

• Salt and water

• Gravel and water

• Shampoo and water

• Sugar and water

Tags

NGSS.MS-PS1-2

Some ways to separate mixtures are listed in the picture. A student is given a beaker containing gravel and water. Which of these ways could the student NOT use to separate the gravel from the water?

• 1

• 2

• 3

• 4

Some people add sugar to their hot tea. Which property of the sugar remains the same when the sugar is in the tea solution?

• The taste of the sugar

• The size of the sugar crystals

• The color of the sugar

• The texture of the sugar

A student made a mixture using equal amounts of salt and pepper. The salt grains were the same size as the pepper grains. What should the student do to most easily separate the pepper from the salt?

• Use a pair of tweezers to remove each grain of pepper

• Run a small magnet through the mixture to attract the pepper

• Put the mixture of water and filter the pepper out of the water

• Use a strainer with a fine wire screen to remove the pepper

A mixture of beads was placed in the container, as shown. 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 of the beads -

• are less dense than water

• are solids

• have the same mass

• are attracted to a magnet

Which change occurs when lemon juice is mixed with 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

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?

• 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

For an investigation a student put 100 mL of water at room temperature into each of three beakers. Then the student added a coin, to the Beaker R, 3 g of a powdered drink mix to Beaker S, and 10 mL of lamp oil to Beaker T. The student stirred the contents of the beakers and then left them sitting on a lab table for 5 minutes. Which diagram shows what the student most likely observed in each of the beakers after 5 minutes?

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Tags

NGSS.MS-PS1-2

A student combined powdered paint with water to make a small amount of a blue liquid paint mixture. The student left the paint mixture in an open container. Several days later the student found the container and observed that changes had occurred. What most likely happened to the mixture?

• The container was empty after the mixture evaporated into the air.

• The paint evaporated, leaving only clear water in the container.

• The water evaporated, leaving only a dry blue solid in the container

• The liquid paint mixture was lighter in color after some water evaporated

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4