6th Grade Post Review

How does energy flow through the states of matter during phase changes?

• Energy is released when a solid melts into a liquid and absorbed when a liquid freezes into a solid.

• Energy is absorbed when a solid melts into a liquid and released when a liquid freezes into a solid.

• Energy is absorbed when a gas condenses into a liquid and released when a liquid evaporates into a gas.

• Energy is released when a solid sublimates into a gas and absorbed when a gas deposits into a solid.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The image shows three samples of the same substance. Each sample has the same number of particles and weighs 1 gram. Consider the relative kinetic energy of the particles in each sample. Compare which terms best complete these sentences. Drag and drop the term in the appropriate blank space. The particles in Sample 2 have ___ kinetic energy than the particles in Sample 3.

• greater

• less

• equal

• much greater

• much less

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which statement about particle arrangement and behavior as an ice cube melts is most accurate?

• Particles begin to move more freely, and the spaces between them slightly increase.

• Particles start to move but remain in a fixed crystal structure.

• Particles completely stop moving as they transition to liquid.

• Particles decrease in size as they become liquid water.

Tags

NGSS.MS-PS1-4

The image shows three samples of the same substance. Each sample has the same number of particles and weighs 1 gram. Consider the relative kinetic energy of the particles in each sample. Compare which terms best complete these sentences. Drag and drop the term in the appropriate blank space. The particles in Sample 1 have ___ kinetic energy than the particles in Sample 2.

• greater

• less

• equal

• similar

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

A student tests and records the following properties of sand and water. What is the best way to separate a mixture of sand and water?

• Using your hands because sand particles are large.

• Using a magnet because sand is magnetic.

• Using a filter, because sand does not dissolve in water.

• By freezing, because water will freeze and separate.

Tags

NGSS.MS-PS1-2

A sugar-water solution is developed in this image. What type of mixture is formed?

• pure substance

• homogeneous

• heterogeneous

• non-uniform substance

Which of the following models best illustrates the properties of solids, liquids, and gases?

• A model where particles in solids are spread far apart, in liquids are tightly packed, and in gases are closely packed.

• A model where particles in solids are tightly packed in a fixed arrangement, in liquids are close together but can move past each other, and in gases are far apart and move freely.

• A model where particles in solids move freely, in liquids are tightly packed and stationary, and in gases are loosely packed and vibrate in place.

• A model where particles in solids are loosely packed, in liquids, are far apart, and in gases are tightly packed.

Tags

NGSS.MS-PS1-4

The image shows three samples of the same substance. Each sample has the same number of particles and weighs 1 gram. Consider the relative kinetic energy of the particles in each sample. Compare which terms best complete these sentences. Drag and drop the term in the appropriate blank space. The particles in Sample 1 have ___ kinetic energy than the particles in Sample 3.

• greater

• less

• equal

• similar

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Use the information in the table below to answer the question. Which list contains only the types of elements that are generally not lustrous?

• List W

• List X

• List Y

• List Z

What is the difference between homogeneous mixtures and heterogeneous mixtures?

• Homogeneous mixtures can be easily separated, and heterogeneous mixtures cannot be easily separated.

• Properties can identify homogeneous mixtures, and properties cannot identify heterogeneous mixtures.

• Homogeneous mixtures contain one substance, and heterogeneous mixtures contain more than one substance.

• Homogeneous mixtures have a uniform composition, and heterogeneous mixtures do not have a uniform composition.