5.5BC Science STAAR (Mixtures & Solutions)

Front

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---

Back

are solids

Front

What most likely happened to the salt after a worker built a sidewalk and pressed some large salt particles into the concrete while it was still wet, and then washed the sidewalk with water?

Back

It dissolved in the water.

Front

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

Back

The orange color became lighter.

Front

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?

Back

Put the mixture in water and filter the pepper out of the water.

Front

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?

Back

Which substances dissolve in water?

Front

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

Back

The taste of the sugar

Front

What most likely happened to the blue liquid paint mixture left in an open container?

Back

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

Front

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 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? (5.5C)

Back

Front

Which properties of a solution changed as ice cubes melted in a beaker with 115 mL of solution at 21 degrees Celsius containing 5 g of salt and 115 mL of water?

Back

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

Front

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) Options: Salt and water, Gravel and water, Shampoo and water, Sugar and water

Back

Gravel and water