write it! station directions - kessler's science...

Write It! Station DirectionsIt is recommended that you have completed at least two of the following stations before working at this station.-Read It!-Explore It!-Watch It!-Research It!

Answer each of the task card questions on the lab sheet in complete sentences.

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Describe how thermalenergy affects atoms within the 3 states of matter?

Describe the process of sublimation.

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Pretend you’re riding the bus to school on a very cold and snowy day. List 3 different phases changes you might see along the way.

Assess It! Station DirectionsIt is recommended that you have completed at least two of the following stations before working at this station.-Read It!-Explore It!-Watch It!-Research It!

Each member will answer the questions from the task cards on the lab sheet in the AssessIt! section.

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How does the addition of thermal energy relate to the molecules in a substance?

A. As thermal energy is added all solids turn into a liquid and then a gas.

B. As thermal energy is added the molecules slow down and move closer together.

C. As thermal energy is added the molecules get excited and move farther apart.

D. As thermal energy is added all gases turn

A student being dropped off at summer school notices her glasses fog up as she gets out of the air-conditioned car. What is this process called?

A. EvaporationB. SublimationC. VaporizationD. Condensation

into liquids. ©KeslerScience.com ©KeslerScience.com

A nearby pond has whatappears to be steam coming off of it after a cold frontpasses through. What is this process called?

A. EvaporationB. SublimationC. Vaporization

D. Condensation©KeslerScience.com

The type of energy which has the greatest impact on the state of matter is energy.

A. SoundB. RadiantC. ThermalD. Gravitational

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Read It! Station DirectionsEach member of the group will read the passage and answer the questions from the task cards on the lab sheet in the Read It! section.

It is important to remember that the answers will come directly from the reading passage.

Dry Ice

Dry ice is a Halloween party staple and a popular special effect for theaters trying to set a spooky mood. But what is the thick white fog that dry ice produces? And why doesn't dry ice melt into a puddle like regular ice?

Unlike the ice cubes in a cold drink, dry ice doesn't melt to become liquid at all. Instead, at room temperature, it changes directly from a solid to a gas in a process called sublimation.

Dry ice is the solid form of carbon dioxide , the molecule that animals breathe out when we exhale and plants take in when they do photosynthesis. Carbon dioxide is a gas at room temperature, and it freezes solid at a much lower point than water: -109 degrees Fahrenheit (-78 C).

Freezing carbon dioxide is also more complicatedthan freezing water. To make dry ice, carbon dioxide gas is first cooled and pressurized to turn it into a liquid. The liquid is then depressurized and allowed to expand back into a gas. This expansion causes a rapid temperature drop, and some of the carbon dioxide freezes into solid pellets of dry ice.

Those pellets are then shaped into chunks which can be used in food storage facilities, biomedical labs and, yes,Halloween haunted houses .

Dry ice's bitter chill keeps perishables cold for longer, but also makes it more dangerous than regular ice. Touching dry ice with bare skin is a recipe for instant frostbite, and breathing in too much of its carbon dioxide fog can suffocate you. So use tongs, keep dry ice in a well-ventilated area, and stick with regularice for your summertime refreshments.

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What is unique about dry ice compared to regular ice?

A. The freezing point to make dry ice is higher than that to make regular ice.

B. Dry ice sublimates and skips the liquid phase change.

C. Dry ice is super cooled water and regularice cools at a slower temperature.

D. Regular ice can keep perishables cooler

Why is it always important to wear safety gogglesand gloves around dryice?

A. Dry ice has a warmer temperature than regular ice and can burn you.

B. Dry ice is super cold and can cause frost bite or a ‘burn’.

C. Dry ice can instantly change into a liquidwhich is harmful to humans.D. Dry ice is explosive when left out too long.

longer.

©KeslerScience.com ©KeslerScience.com

What is sublimation?

A. A phase change from solid to liquid to gas

B. A phase change from solid to liquid

C. A phase change from solid to gas

D. A phase change from gas to solid©KeslerScience.com

How does thermal energy play a role in sublimation?

A. When thermal energy is removed dry ice can sublimate.

B. When thermal energy is added dry ice can sublimate.

C. Thermal energy is not necessary forsublimation.

D. Thermal energy causes the molecules toslow down and sublimate.

©KeslerScience.com

Watch It! Station DirectionsEach member of the group will go to the website listed on task card #1

Complete the task cards in order.

Every student will answer the questions from the task cards on the lab sheet in the Watch It! section of the lab sheet.

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StudyJams https://goo.gl/HrfwmsURL is case-sensitive

1. Click Play on the video.2. Answer questions from

cards#2-4 on your lab sheet.

How are molecules related to the states of matter?

Make a T-chart with the 3 states of matter and list how the molecules move in each state.

Compare and contrast evaporation andcondensation.

Research It! Station DirectionsEach member of the group will go to the website listed on task card #1

Complete the task cards in order.

Every student will answer the questions from the task cards on the lab sheet in the Research It! section.

1. Go to https://goo.gl/P2rjr9 URL is case-sensitive

Using the article for your research answer the following questions.

1. Describe how plasma and Bose- Einstein condensates are different from the 3 states of matter wenormally talk about.

1. How are sublimation and deposition different from each other?

2. Compare and contrastevaporation and boiling.

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Explore It! Station Directions

One member of the group will read the task cards in order. The group will be responsible for completing each of the tasks that are being read.

Each member of the group will then write their conclusions down on the lab sheet in the Explore It! section.

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You will need safety glasses on for this ENTIRE station.

You already know the 3 main states of matter: solids, liquids, and gases.

You may not know that thermal energy (heat) plays a major role in changing matter from one state (or phase) toanother. ©KeslerScience.com

Think about a block of ice sitting on akitchen counter.

1. What happens to the ice over time?2. Why does this happen?3. Describe the phase change of the

ice if it were to be left sitting out.4. What word is associated with this

phenomenon?

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Think about water that has recently been placed in an ice tray in the freezer.

1. What happens to the water over time?2. Why does this happen?3. Describe the phase change of

the water over time.4. What word is associated with this

phenomenon?

©KeslerScience.com

As thermal energy is added to matter, the atoms get excited (vibrate) and the space between them increases.

The motion and spacing of the atoms determines the state of matter.

1. Describe how the atoms acted in task card #2.

2. Describe how the atoms acted in task card #3.

Make some observations of the beaker on the hot

When a liquid changes into a gas this is called vaporization. There are two kinds of vaporization.

Evaporation – usually occurs on the surfaceand can happen below boiling

1. Do you notice any phases changes happening? Describe

2. Describe the atoms as heat is applied to the liquid.

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DO NOT touch the dry ice. It is -109.3 F

1. Put on safety gloves or use tongs.2. Grab a small piece of dry ice

temperature and pressure.Boiling – happens throughout the liquid once the liquid has reached a certain temperature and pressure.1. Which kind of vaporization is

happening at your demonstration?

1. What phase change happenedwhen you dropped the dry ice into

and place it into a beaker that is¼ full of very warm water.

3. Make observations and

answer the questions on the next card.

©KeslerScience.com

plate.

the water?2. Describe the atoms as they are

heated rapidly.3. Does the dry ice turn into a liquid?

When a solid changes into a gas this is called sublimation.

Adding the dry ice to the warm water speeds up the process of sublimation.1. What would happen to the dry

ice if you left it on the counter for a couple of hours?

©KeslerScience.com

Follow the directionscarefully for thenext demo.

1. Fill a jar or beaker 1/3 full with boiling or very hot water.

2. Place a dish of ice cubes overthe top of the

container.3. Make observations about the

gas within the container.

1. What phase change happened to the gas inside the container after adding the ice?

2. Describe the atoms during this process.

3. What do you notice on the walls

of

When a gas changes into a liquid this is called condensation.

Adding the ice on top of the

very warm air caused the gas to condensate and turn into a liquid.

1. Where else have you seen this

the container?©KeslerScience.com phenomenon?

Illustrate It! Station Directions

Each member of the group will draw a quick sketch on the lab sheet the shows they understand the concept that is being taught.

Use the colored pencils and markers that are provided.

The directions for the sketch are provided on the task card at the table.

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Illustrate It! Station DirectionsUse the colored pencils to draw an image that represents what the atoms look like in a solid, liquid and a gas.

Be sure to label each diagram.

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Organize It! Station DirectionsIt is recommended that you have completed at least twoof the following stations before working at this station.-Read It!-Explore It!-Watch It!-Research It!

Each group will organize the cards. Each of the cards will be used. Once you are complete please have the teacher sign off on your lab sheet.

Please mix up the cards again before the next group arrives at this station.

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Sublimation

Evaporation

Condensation

Boiling

Melting

Freezing

Thermal energy is added - Solid to a Gas

Thermal energy is added - Liquid to a Gas

Only happens on the surface of the liquid

Thermal energy is lost - Gas to a LiquidThermal energy is added

- Liquid to a GasHappens throughout the entire liquid

Thermal energy is added - Solid to a Liquid

Thermal energy is lost - Liquid to a Solid

Solids Liquids and Gases

Explore It!

Task Card #2:1.2.3.4.Task Card #3:1.2.

3.4.

Task Card #4:1.

2.

Task Card #5:1.

Name Task Card #6:1.

Task Card #8:1.2.3.

Task Card #9:1.

Task Card #11:1.

2.

3.

2. Task Card #12:1.

Write It!Task Card #1:

Task Card #2:

Task Card #3:

Solids Liquids & Gases

Illustrate It!

Name

Assess It!#1 #3

#2 #4

Read It!#1 #3

#2 #4

Research It!

Task Card #1:1.

Task Card #2: 1.

2.

Organize It!

write it! station directions - kessler's science...

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