Activity 6

Activity 6

1. Convert 0°F, 32°F, 70°F, and 212°F to Kelvin

0°F = 255.372 K

32°F = 273.15 K

70°F = 294.261 K

212°F = 373.15 K

2. Under the For Teachers area of the State of Matter webpage,  complete the  Teacher Submitted Activities: States of Matter Simulation Lab by Kelly Vaughan. Complete the lab worksheet as if you were a student, and then post this on your blog. You can scan it or just take a picture of it. NOTE: As you work with PHET, you may need to create an account at this site.

3. In the States of Matter simulation, choose the Solid, Liquid, and Gas Tab at the top of the screen. Choose the water molecule and cool the water to 0 K. Describe how the water molecules are aligned and attracted to each other. Which atoms are attracted to which other atoms?

The atoms have space in between each other but they are still somewhat connected. The hydrogen atoms are attracted to the oxygen atoms.

4. Discuss why this statement is not true for water: As a liquid freezes, the molecules come closer together and have greater attraction for each other.

It is not true that the molecules of water pack closer together as the water freezes. In actuality, the molecules just slow down their movement and stop moving around as much.

5. Switch to the Phase Changes Tab on the States of Matter simulation. Notice how on the bottom right there is a small red dot that indicates where the system is at as far as temperature, pressure and state of matter. Play with the simulation to notice changes, notice that when you push down the pressure can go way up and explode the box. On your blog, report a temperature and pressure required to make oxygen a liquid. This is sometimes how the oxygen exists in pressurized oxygen tanks, perhaps like ones you may use to go diving.

Oxygen can exist as a liquid at 25.2 ATM and 75 K.

5. List and describe at least two Science Standards that this activity addresses. 

B.4.1 Use encyclopedias, source books, texts, computers, teachers, parents, other adults, journals, popular press, and various other sources, to help answer science-related questions and plan investigations 

In order to successfully complete this lab simulation, a computer was used.

D.4.3. Understand that substances can exist in different states-solid, liquid, gas 

The point of completing this lab simulation was to understand that substances can exist in different states, including solids, liquids, and gases.