Questions On The Course Learning Management System

Data Tables and Observation: Fill out the data sheet (below) for the experiment and submit with this form. Recording data carefully

Dry ice is a solid form of carbon dioxide that produces a cold dense mist. I first learned what Dry Ice was in fifth grade, this was due to the fact that my class had taken a field trip to River Legacy Park. Where we saw an experiment and learned facts about dry ice. This led to a fascination with dry ice, in this experiment I will test whether the temperature of water and soda affect when poured over Dry ice. Dry Ice has multiple purposes some of which, is chemotherapy, to carbonate liquids, store food, and accelerate plant growth. Since, I always liked the thought of working with Dry Ice I had begun to think of an experiment to do for the IA involving Dry Ice. After much consideration I choose to test how soda and water would

The first part of the lab began by one lab member adding 10.0 mL of DI water to a test tube while another lab member obtained a beaker full of ice and salt. After both these steps were complete the test tube was put in the beaker full of ice. Immediately following the test tube be being placed in the beaker, a temperature probe was inserted into the test tube. The initial temperature was recorded and after the temperature was recorded in 30 second increments. Once the water exhibited supercooling and then remained consistent at .1 °C for 3 readings it was determined that the water had froze and formed crystals. Evidence that crystals formed allowed for it to be confirmed that the water actually hit freezing point at .0

3.Refer to the guidelines for writing an effective summary presented in the Module 2 lecture for use as a guide. Review the assignment rubric as well prior to beginning the assignment.

Use the article assigned to you to answer the assigned questions. Upload the answers BEFORE the start of lab on the due date!

When dry ice is mixed with hot water, it can produce quick bubbling water and a lot of fog. Dry ice produces fog because its cold temperature of -109.3deg F or -78.5deg C, when put in water, it produces a cloud of water vapor fog. When the water get lower than 50deg F. it stops producing fog. Dry ice will smoke longer on a damp day than a dry day.

Conclusion 1. Restate the main points: remind you topics covered

The correct chemistry in the video is the snowman (Olaf) was letting out steam. The snow does not turn into steam but the water vapor in the atmosphere turns into a thick vapor that can be seen in the form of fog, as in the winter when blowing on the hands we notice the exit of water vapor when exhaling.

1. Lab reports are to be computer-generated and double-spaced. All sections of the report must

My Science teacher got dry ice and put in a little plastic tray and an aluminum tray. Then she added water to the tray and the dry ice started to react with the water. Very quickly the trays were getting very cold. It started to let out this sort of fog and it was floating down.

Fog, “like any cloud, usually forms in one of two ways: (1) by cooling-air is cooled below its saturation point (dew point); and (2) by evaporation and mixing-water vapor is added to the air by evaporation, and mixing-water vapor is added to the air by evaporation, and the moist air mixes with relatively dry air.” (Ahrens & Samson, 2011, p. 97)

What is dry ice? Dry ice is the solid form of  carbon dioxide, and it is sometimes called "cardice". Dry ice is extremely cold ranging from temperatures like -109.3°F or -78.5°C. At this temperature, it sublimates from a solid state into a gaseous state and/or undergoes deposition from a gas to a solid form. In order for dry ice to form liquid carbon dioxide, it needs to be placed in a high-pressure area or environment. The first published observation of dry ice was in 1835 by French chemist by the name of, Charles Thilorier. He noted the formation of dry ice when a container of liquid carbon dioxide was opened, and released into the air. Dry ice resembles snow or water ice. It's usually sold as chunks or pellets, which appear white because

They are known as rime and clear ice, and a mixture of the two is not uncommon. For rime ice to form, an aircraft needs to fly through an area of tiny super-cooled liquid drops. This super-cooled liquid is actually suspended in the cloud cover at temperatures already below freezing. Once the aircraft surface plows through this moisture, the drops are disrupted immediately adhere to and freeze before spreading out over the entire surface. This forms a rough and cloudy-white layer of ice known as rime. Even though the rime surface is rough and creates an airflow disturbance, it is lighter and easier to remove by deicing equipment than clear ice. For clear ice to form, larger sized super-cooled drops would need to be encountered. These larger droplets spread out over the surface and airfoils before freezing. This allows for the build-up of a clear, hard and slick layer of ice on the surface (Ahrens, 2009).

An alcohol bath was prepared with an ethanol solution and dry ice, the solution was measured using a thermometer, at approximately -15˚ the bath was placed under a Polaroid filter and above a stable jar upon a white piece of paper. The capillary level holder with the frozen capillary tubes was placed carefully into the bath (at an angle to reduce effervescence). A lamp was placed 20 cm away from the setup and shone on the Polaroid filter. This setup ensured the ethanol solution didn’t heat up too rapidly.

17) In calm winter conditions in NW Europe dense fog is cleared most effectively by"/>