Matter Part A

In which state of matter do particles move the least?

• plasma

• liquid

• gas

• solid

When being transferred from one container to another, liquids will

• change both shape and mass.

• maintain their shape and volume.

• change their mass and maintain their shape.

• maintain their volume and change their shape.

Solid carbon dioxide is commonly known as dry ice. Carbon dioxide freezes at a temperature of -78.5°C, which makes dry ice very good at keeping things cold. Liquid carbon dioxide does not exist at atmospheric pressure. Because of this, dry ice immediately changes to a gaseous state when it is warmed. This can be seen as a benefit of using dry ice, since no liquid is left in the container that is being used to keep things cold. A shipping company wants to determine how effectively dry ice can keep food frozen in a cooler system over time. A scientist at the company places a block of dry ice in a cooler and closes the lid. The picture shows the dry ice being put into the cooler.

Which statement BEST describes the change in carbon dioxide molecules during the experiment?

• The carbon dioxide molecules gained energy and became less tightly bound to each other.

• The carbon dioxide molecules lost energy and became less tightly bound to each other.

• The carbon dioxide molecules lost energy and became more tightly bound to each other.

• The carbon dioxide molecules gained energy and became more tightly bound to each other.

Tags

NGSS.MS-PS1-4

A student is creating two models to show the effect of thermal energy on the movement of particles in a liquid. She draws the first model of a liquid sample. Her model is shown. How should the student complete her unfinished model?

• She should draw particles far apart and moving freely to show thermal energy being added to a liquid.

• She should draw particles far apart in a fixed position to show thermal energy being removed from a liquid.

• She should draw particles close together in a fixed position to show thermal energy being added to a liquid.

• She should draw particles close together and moving freely to show thermal energy being removed from a liquid.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

Every substance is made of tiny particles called atoms that combine to form molecules. Substances change phase at different temperatures. When substances change phase, the interactions between the particles of the substances change. The diagram shows how the addition or removal of thermal energy affects the motion and energy of the particles of a substance. Each blue circle in the diagram represents a particle of the substance, and the red lines represent the motion of the particles. More red lines represent higher speeds of movement by the particles. The table shows the temperature ranges of the three phases of water. Which model represents a phase change in which the kinetic energy of water molecules decreases?

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Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which of the following is a chemical property?

• mass

• reactivity with an acid

• ability to dissolve in water

• boiling point

Which of the following is NOT a physical property?

• shape

• Flammability

• color

• texture

Phillip performed an experiment to measure the temperature of water as he heated it on a hot plate. At the end of his experiment, he plotted his results on the graph below. Which of the following physical properties of water did Phillip measure?

• the melting and boiling point of water

• the volume and thermal conductivity of water

• the solubility and electrical conductivity of water

• the densities and physical states of matter of water

Tags

NGSS.MS-PS1-4

Which of the following tables correctly matches each type of property to an example of that type of property?

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Select two changes that are examples of physical change.

• iron rusting

• ice melting and Paper folding

• juice freezing

• bread burning

• leaves decaying