Int1 Task 3 Essay

The purpose of this experiment was to investigate the effect that different liquids would have on gummy bears. To do this we brought in different liquids, such as Fanta soda, salt water, water, and baking soda water. My hypothesis is, If you put gummy bears in different liquids then they might dissolve or enlarge. This experiment was tested on 9-14-17 and my group and I started gathering data, we started with 1 minute, 5 minutes, and then 24 hours. There wasn’t much change in the 1 and 5 minutes, the real change happened overnight. The next day of this experiment the gummy bears had mostly enlarged and softened, there was one that accomplished to do the exact opposite, the salt water gummy bear decreased and hardened. I believe that the salt

In other words, it takes less energy to raise the temperature of the salt water 1°C than pure water. And in the winter time, adding salt to the ice lowers its freezing point, so even more energy has to be absorbed from the environment in order for it to melt.

Get 2 basins, fill one with iced cubes and water, and fill the other one with warm

The scientist will be doing an experiment on how sugar and salt affects the boiling point and the freezing point of water.

The intended procedure was for us to do step 1 which is put the dry ice into the bowl. Step 2, pour alcohol into the bowl with the dry ice. Step 3, let it sit there for 3 minutes then start mixing the dry ice with the alcohol. Step 4, Began to Dip objects into the dry ice/alcohol mixer.We finally got the dry ice after weeks of waiting. We got after it during class, a few minutes into class. We also got the materials such as rubber gloves, aluminum bowl, goggles and the dry ice.

The hypothesis stated that if the amount of salt mixed with the ice was increased, then the final temperature of the ice cream will decrease. Although the changes in temperature throughout the four variables were slight, the overall trend supports the hypothesis. The overall trend for the experiment was that as the amount of salt added to the ice increased, the final temperature of the ice cream decreased. In the set of trials with no salt added, the lowest temperature obtained was 1.5 degrees Celsius. This observed temperature occurred as a result of the ice being exposed to room temperature and there being no salt added to break the bonds on the ice, lowering the freezing point of the ice as it melts.

In Part A of the experiment, the freezing point depression of deionized water, the solvent, was monitored and analyzed. First, a cold bath was prepared by filling a beaker full of ice, and adding around 20 g of rock salt and 20 mL of water until the temperature was between -10C and -15C. The LabQuest and corresponding temperature probe was then prepared. 20 mL of deionized water was added to a glass vial, and the temperature probe was then added to the vial. The vial was lowered and submerged into the ice bath while the LabQuest collected temperature readings. The vial was removed from the ice bath once the readings stabilized after around twenty minutes.

Explanation (20 min): The teacher and students will discuss the results of the ice cube experiment. Lecture about the salinity and subsurface topography. Discuss a misconception about the relationship between salinity and temperature of the oceans.

The topic is Chemistry of Making Ice-Cream: Lowering the Freezing Point of Water. In this experiment the scientist will be researching how to lower the freezing point of water using salt and/or sugar. The Independent Variable in this experiment is the solutes that the scientist uses which are, chemicals that dissolve in liquids. The Dependent Variable is the temperature/freezing points of the substances(°C). A constant is this experiment would be the use of salt and sugar and the control would be the pure water because it is important for determining the freezing point of the water in the experiment.

Simply put, salt causes "freezing point depression" in ice, meaning it lowers ice's freezing point. When salt is sprinkled upon ice, it creates a brine with the film of surface water on the ice, which lowers the freezing point and starts melting the ice. In

In the experiment we did in science class what I observed was that when the water is added to the dry ice it automatically starts to make fog and then after a few minutes it started to boil. The water started to boil and then the dry ice dissolves completely into the water. Then the only thing that you can see is the bubbles in the water.

This was the mechanical weathering lab that gives us the knowledge of how rocks break down. The sugarcubes represent the rock before and after the event of weathering. We used the sugarcubes because the they are a sedimentary rock, which means that they are very easy to break. What we thought was going to happen was that using gravity and a small container, putting the the cubes in the container and shaking it for three minutes would cause the sugarcubes to break down. The data does not make a perfect because every time you break down a rock you don’t always break off the same amount of rock for everyone.

If I add salt to one of the bottles of water, but not to the other, then the bottle of water that had the salt will take longer to reach its freezing point.

In this experiment, the materials needed are 3 Peltier tiles, a mini electric fan, batteries,, duct tape, sandpaper, transistor, breadboard, resistor, jump wires, multimeter, and glue.

I put the ice water on the left side of the lunch bag, so it will decrease the amount of heat being transferred, from warmer items. For the ice water, the particles are cold, and are moving slowly. But with a little space between it, and not much kinetic energy. The ice water is on top of the chilled salad, and is in front of an ice pack. The ice pack keeps the ice water particles from being heated up. Also the ice water, would keep the chilled salad from warming up.