Matter STAAR Review

A beaker with 100 ml. of solution has a temperature of 19 degrees C. The solution contains 10 g of powdered drink mix and 100 ml of water. Students added three ice cubes and stirred the solution with a spoon. Which properties of the solution changed as the ice cubes melted?

• the mass and volume of the powdered drink mix in the solution

• the relative density and mass of the powdered drink mix in the solution

• the temperature, volume and mass of the solution

• the physical state and magnetism of the solution

Tags

NGSS.MS-PS1-4

To make cupcakes, a student put flour, salt, baking soda, sugar and chocolate chips into a bowl. After she stirred the ingredients, she remembered that one of the students in her class could not have chocolate. She used the spoon shown to remove the chocolate chips. Why were they easily removed?

• the chocolate chips were less dense so they were on the top

• after she stirred the ingredients, they formed a solution

• size and shape of the chocolate chips did not change when they were mixed with the other ingredients

• the chocolate chips evaporated when the girl mixed them with the salt

Tags

NGSS.MS-PS1-2

Some properties of two different samples of matter are below.

Which statement about the samples is most likely correct?

• Sample 1 is glass, sample 2 is clay.

• Sample 1 is iron, sample 2 is sugar.

• Sample 1 is copper, sample 2 is wood.

• Sample 1 is milk, sample 2 is salt.

Tags

NGSS.MS-PS1-1

A student adds 10 grams of salt to 50 milliliters of water and stirs for 15 seconds. What change occurs as she stirs?

• The water changes physical state.

• The salt dissolves and spreads evenly throughout the water.

• The volume of the water decreases.

• The salt evaporates into a gas.

Tags

NGSS.MS-PS1-2

A student makes 5 different mixtures and listed their ingredients.

In which mixtures do all the ingredients maintain their physical state?

• Mixtures 2 and 5 only

• Mixtures 1, 3 and 4

• Mixtures 1 and 4 only

• Mixtures 2, 3 and 5

A student combines salt and pepper in a beaker of water and stirs. The students observes that the salt dissolves but the pepper does not. Which evidence supports the student's observations?

• The slat and pepper both floated on top of the water.

• The salt mixed evenly with the water and cannot be seen, while the pepper floated on top of the water.

• The salt and pepper both mixed evenly with the water and cannot be seen.

• The pepper mixed evenly with the water and cannot be seen, while the salt floated on top of the water.

Tags

NGSS.MS-PS1-2

A student compares the physical properties of the 4 objects shown. Which of the physical properties do the 4 objects have in common?

• They all have the same physical state and conduct electricity.

• They all conduct electricity and attract the same metal objects.

• They all attract the same metal objects and are not soluble in water.

• They all are not soluble in water and have the same physical state.

A student prepared a snack that consisted of grapes, pecans, and strawberries sprinkled with white powdered sugar. The student stored the snack in a refrigerator. An hour later the student observed that the powdered sugar could no longer be seen but the fruit and nuts had not changed in appearance. What most likely happened to the sugar in the mixture?

• The sugar evaporated at the lower temperature in the refrigerator without causing any changes to the fruit and nuts.

• The sugar was more dense than the other foods in the mixture, so it settled to the bottom of the container.

• The sugar dissolved in the moisture on the fruit.

• The sugar absorbed energy from the nuts and melted into a colorless liquid.

Tags

NGSS.MS-PS1-2

A group of students is given four small cubes of the same size and instructed to place them in a beaker of water. One cube floats to the surface of the water. Two of the cubes float in the middle of the beaker under the surface of the water. The last cube sinks to the bottom of the beaker. Which conclusion is best supported by what the students observed?

• Two of the four cubes are soluble in water.

• All four cubes have different masses.

• Each cube is made of a different type of solid material.

• One of the cubes is more dense than the other three.

A student mixes a sample of stones with a sample of table salt. The mass and volume of the samples were determined before mixing the samples. The mass and volume of each sample is shown. Which statement is true about the mixture?

• The mass of the mixture is 85 grams.

• The mass of the mixture is 60 milliliters.

• The volume of the mixture is 60 grams.

• The volume of the mixture is 85 milliliters.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5