5.PS1.1 - Phase Changes

Liquid water typically boils to steam at 212°F (100°C). If water is boiling, what would happen to the boiling liquid water if we heated the pot to an even hotter temperature, such as 300°F (149°C)?

• The temperature of the liquid water would increase to 300°F (149°C) due to the increased heat. The water would not boil any faster.

• The temperature of the liquid water would stay at 212°F (100°C). The water would not boil any faster.

• The temperature of the liquid water would stay at 212°F (100°C). The water would boil faster due to the increased heat.

Tags

NGSS.MS-PS1-4

Which THREE substances will have a phase change if the temperature goes up from 50° to 300°?

• Gallium

• Phosphorus

• Potassium

• Rubidium

• Sodium

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Students put solid butter and solid water on a table. The air temperature around the table is 20°C. Which statement describes the most likely state of each substance after 2 hours?

• The butter and water will both remain solids.

• The butter and water will both become liquids.

• The butter will remain a solid, and the water will become a liquid.

• The butter will become a liquid, and the water will remain a solid.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

In a classroom experiment, students placed 100 grams of water in one beaker and 100 grams of an unknown liquid called Liquid X in another beaker. They left both beakers on a table and weighed them every day. Below is a graph showing all the data over five days. What conclusion can be made from the graph?

• Water evaporates more quickly than Liquid X.

• Water and Liquid X both evaporate at the same rate.

• Water did not evaporate at all, but Liquid X did.

• Water evaporates more slowly than Liquid X.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS3-4

Which of the following is an example of a liquid state of matter?

• ice

• water

• water vapor

• rocks

Tags

NGSS.MS-PS1-4

A student watches her uncle prepare to melt chocolate chips in the oven at home to make a hot fudge treat. The chocolate chips are placed into the oven. As the oven heats the chocolate chips, the student makes the following observations: At 75°F the chocolate chips are shaped into small, solid shapes. At 86°F the chocolate chips are losing their hard edges. At 90°F the chocolate can be stirred with a spoon.

What happened to the chocolate chips?

• The chocolate chips had a change of physical properties caused by the heat.

• The chocolate chips dissolved into a hot fudge liquid.

• The chocolate chips became a mixture with hot fudge.

• The chocolate chips mixed with the heat and caused a new substance to form.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

A student sets up an investigation to see what happens to the temperature when ice melts to liquid water.

First, ice was added to a cup. Then, the cup was set on a kitchen counter. The student recorded the appearance and temperature of the cup every five minutes until the ice completely melted.

What reason best explains why the temperature of the water is 32°F (0°C) in two of the pictures?

• The melting ice will keep the water around 32°F (0°C) until the ice completely melts.

• More ice was added to the 32°F (0°C) water to keep it at that temperature.

• Liquid water can only be found at 32°F (0°C) or below, or else it boils to steam.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

In the experiment below, liquid water is heated inside a bottle. A balloon is fitted over the top of the bottle.

After a short time passes, the balloon begins to inflate. How does the liquid water in the bottle cause the balloon to inflate?

• It boils into a hot gas, which rises to fill the balloon.

• It forms a new substance as an invisible gas, which causes pressure to fill the balloon.

• It contains a dissolved powder, which separates from the water to fill the balloon.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

The phase change from water vapor to liquid water is known as...

• evaporation

• precipitation

• condensation

• sublimation

Tags

NGSS.MS-PS1-4

What is sublimation?

• phase change between solid and liquid

• phase change from solid to gas

• phase change from gas to solid

• phase change from solid to solid

Tags

NGSS.MS-PS1-4