Comparing States of Matter and Changes in State

Students conduct an investigation to determine how water changes state when it is heated and cooled. They complete the steps shown in the table. Step 1: Place the beaker of ice cubes outside on a 25°C, sunny day for 2 hours. Observation: The ice cubes disappear, and only liquid water is present in the beaker. Step 2: Bring the beaker of water into an air-conditioned room for 10 minutes. Observation: Water droplets form on the outside of the beaker. Step 3: Heat the beaker of water on a hot plate at 100°C for 10 minutes. Observation: ? Which observation will the students MOST LIKELY make in Step 3?

• A. Water vapor forms from outside of the beaker, and the amount of water in the beaker decreases.

• B. The water in the beaker begins to form a layer of ice on top.

• C. The water in the beaker begins bubbling, and the amount of water decreases.

• D. Water droplets begin to form on the inside of the beaker.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which statement BEST describes what happens as water changes from one state to another?

• As water is cooled, it freezes and changes from a solid to a liquid.

• As water is cooled, it condenses and changes from a gas to a liquid.

• As water is heated, it evaporates and changes from a liquid to a solid.

• As water is heated, it melts and changes from a gas to a solid.

Tags

NGSS.MS-PS1-4

Students observe a glass of ice and water. The glass is dry on the outside. After ten minutes students see drops of water on the outside of the glass. Which statement best explains the students’ observations?

• The water vapor in the air changes to a liquid when it touches the cold glass.

• The cold water inside the glass rises and then slides down the outside of the glass.

• The ice in the glass melted and caused the water to overflow the glass.

• The water moved to the outside surface through tiny holes in the glass.

Tags

NGSS.MS-PS1-4

Students plan to investigate the different states of matter. They will measure the volume of water in three containers after five days. They make this table to organize the data:

Which graph represents the volume of water most likely left in the containers after five days?

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Tags

NGSS.MS-PS1-2

Olivia heated a pot of water on the stove and observed steam rising from the pot. She then held

a cold metal spoon just above the steam and noticed water droplets forming on the spoon's surface.

Describe the changes in the state of matter that occur in this scenario AND explain what occurred in order for those changes to occur.

Tags

NGSS.MS-PS1-4

What happens to particles in a substance when it changes from a solid to a liquid?

• They spread out and move faster.

• They slow down and stick together.

• They stay in the same arrangement.

• They disappear.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which statement correctly compares the particles in a liquid to those in a gas?

• Particles in a liquid are spread far apart and move freely, while particles in a gas are close together and vibrate in place.

• Particles in a liquid are closer together and move past one another, while particles in a gas are far apart and move freely.

• Particles in a liquid have no movement, while particles in a gas move slowly in all directions.

• Particles in a liquid and gas are packed tightly but move at different speeds.

Tags

NGSS.MS-PS1-4

Ms. Lara places three samples ice cubes, water, and steam into separate containers. Which statement best compares their properties?

• Ice has a definite shape and volume; water has a definite volume but no definite shape; steam has neither a definite shape nor a definite volume.

• Ice has no definite shape but has a definite volume; water has a definite shape and volume; steam has no definite volume but has a definite shape.

• Ice, water, and steam all have definite volume, but only steam has a definite shape.

• Ice, water, and steam all have a definite shape, but only ice has a definite volume.

Tags

NGSS.MS-PS1-4

A science class investigated the properties of three samples of matter. Each sample was placed into a container, and the students recorded whether the sample kept its shape and whether it kept its volume. The results are shown in the table below.

Based on the data in the table, which row correctly matches each sample to its state of matter?

• Sample 1 is a Solid, Sample 2 is a Liquid Sample 3 is a Gas

• Sample 1 is a Gas, Sample 2 is a Solid Sample 3 is a Liquid
  

• Sample 1 is a Liquid, Sample 2 is a Solid

  Sample 3 is a Gas

• Sample 1 is a Solid, Sample 2 is a Gas Sample 3 is a Liquid

A balloon filled with helium changes shape easily when squeezed and will expand to fill any container it is placed in. A block of wood keeps its shape and size no matter where it is placed.

Which statement correctly compares the two?

• The balloon is a gas because it has no definite shape or volume, while the wood is a solid with a definite shape and volume.

• The balloon is a liquid because it can change shape, while the wood is a gas because it keeps its shape.

• The balloon is a gas because it has a definite shape, while the wood is a solid with no definite volume.

• The balloon is a liquid because it has a definite volume, while the wood is a solid with no definite shape.

Tags

NGSS.MS-PS1-4