Matter and Their Interactions

How would you describe the molecules in a liquid?

• Molecules are tight with little movement.

• Molecules are very spread apart with lots of movement.

• Molecules are loose with some movement.

• Molecules don't exist.

Tags

NGSS.MS-PS1-4

How would you describe the molecules in a gas?

• Molecules are tight with little movement.

• Molecules are very spread apart with lots of movement.

• Molecules are loose with some movement.

• Molecules don't exist.

The diagram shows water particles in three different phases.

On a summer day, water particles from the ocean change phase as they move into the air. Which of the following models best shows this process?

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Tags

NGSS.MS-PS1-4

NGSS.MS-ESS2-4

NGSS.MS-PS3-4

Veronica weighed an empty bowl and recorded its mass. Then she placed three ice cubes in the bowl and weighed it again. After the ice melted, she recorded the mass of the bowl and the water. She put the data in a table. What conclusion should Veronica make from her observations?

• The masses of the water and the ice were both 43 grams, so the amount of matter did not change.

• The masses of the water and the ice were both 153 grams, so the amount of matter did not change.

• Some of the water spilled because the mass of liquid water should have been greater than the mass of solid ice.

• There was an error in weighing the ice because the mass of liquid water should have been less than the mass of solid ice.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A glass of ice water is placed on a table inside a room that is at room temperature. The ice inside the glass melts. The diagram represents the changes observed. Which piece of evidence supports the conservation of matter during the changes shown in the diagram?

• The contents of the glass are wet before and after the ice melts.

• The combined mass of the glass and its contents is the same before and after the ice melts.

• The combined mass of the glass and its contents is less after the ice melts.

• The contents of the glass are colorless before and after the ice melts.

Tags

NGSS.MS-PS1-5

Malik weighed an empty beaker. The beaker weighed 50 grams. Then Malik added 115 grams of water to the beaker. He placed the beaker of water in a freezer until the water became solid ice. Which prediction should Malik make about the ice in the beaker?

• The ice will weigh less than 115 grams. After the ice melts, the water will weigh less than 115 grams.

• The ice will weigh less than 115 grams. After the ice melts, the water will weigh 115 grams.

• The ice will weigh 115 grams. After the ice melts, the water will weigh less than 115 grams.

• The ice will weigh 115 grams. After the ice melts, the water will weigh 115 grams.

Tags

NGSS.MS-PS1-5

Andrew designs an investigation to test how temperature affects the formation of a solution. He mixes the same amounts of sugar to water at different temperatures. Andrew creates the chart shown to record the results. Andrew will know that a solution has formed when what happens to the liquids?

• when the liquids give off an odor

• when the sugar in the liquids dissolves

• when the masses of the liquids are reduced

• when a solid substance appears in the liquids

Tags

NGSS.MS-PS1-2

Students build a model rocket. The rocket uses a dissolving antacid tablet for power. The students want to know if the size of the pieces of an antacid tablet affects the distance that the rocket flies.

Students pour 20 milliliters of tap water into the rocket. Then they add half an antacid tablet to the water and close the rocket. They launch the rocket and measure the distance it flies. The diagram shows the materials used.

• Repeat the same process three times to improve the precision.

• Do one trial using half an antacid tablet broken into a few pieces and one trial using a powdered half of an antacid tablet.

• Do several trials, adding half an antacid tablet to different amounts of water.

• Use a full antacid table for the trial instead of half an antacid tablet.

Tags

NGSS.MS-PS1-2

NGSS.MS-ETS1-4

Mrs. Garza's class mixed some materials. They mad a table of the materials and the products after the materials combined.
Based on the table, which materials mixed to form a new substance?

• water and flour

• water and salt

• iodine and flour

• iodine and salt

Tags

NGSS.MS-PS1-2

When the vinegar and baking soda combine, bubbles appear because

• a mixture forms

• a new gas forms

• the vinegar is a liquid

• the baking soda dissolves

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5