How Water Has Many Properties And Functions

During the water drops on a penny, we had an opportunity to make predictions and participate in several trials. Although participating in experiments is important, one way the classroom teacher could enhance the experience would you to have the students come up with a list of testable questions. Once the students have made their list of questions, allow the students to make a prediction, and then test their hypothesis. There were four groups of students each doing their own independent trails and asking their own questions, however, the results were very similar. Although, different techniques were used, the outcomes still allowed each student to have an experience observing surface tension. (See Question 1)

Water (H2O) is a good solvent because it is partially polarized. The hydrogen ends of the water molecule have a partial positive charge, and the oxygen end of the molecule has a partial negative charge. This is because the oxygen atom holds on more tightly to the electrons it shares with the hydrogen atoms. The partial charges make it possible for water molecules to arrange themselves around charged atoms (ions) in solution, like the sodium (Na+) and chloride (Cl−) ions that dissociate when table salt dissolves in water.

Introduction :You will be exploring three scenarios and conducting observations on the physical and chemical changes in matter: The Iced Tea Debate, Salty Soup, and Fire Bug.

The objective of this experiment will be to combine various substances, liquids and metals, and to observe their behavior when they are combined. The types of reactions observed shall determine the nature of these reactions: physical or chemical.

Substance A and B were weighed; Substance A weighed 0.502 g and substance B weighed 0.503 g. Both substances were put into two different test tube with approximately 8 ml of DI water into the test tub. Substance A and B were stirred and B dissolved while A did not. This shows that B is soluble in water compared to A. Thus, shows that B is soluble in water than A. The reason why B is soluble in water is because it has a higher dipole moment than A. With a higher dipole moment, it shows that it is soluble in water since it is polar and the bonds were easily broken.

Experimental Method: Polyethylene glycol 3350(PEG) was placed in water in order to measure the amount of time it took for the PEG to dissolve. The amount of both PEG and water were the same for each trial, the only changing factor was the temperature of the water. Timing started the moment PEG was placed into water, and the timer was stopped once PEG was dissolved.

In this lab, the class was tasked with creating using the aluminum from soda cans in order to produce alum, which is a water purifier. In our experiment, we were tasked with multiple skills of experimentation in which the class used a vacuum filtration device to help separate the alum from the rest of the unnecessary solution. We were also able to mix acids such as sulfuric acid and observe these reactions over time.

This chemistry experiment Is a representation. Of a non-polar molecule, which means that it is not a solute. The molecule is hydrophobic and the soap card a solute structure. The milk contains fats, proteins and vitamins but these three Nutrients are very fragile to change. Once the soap hits the milk it sends a search party look for the fats and detains the fats in anyway possible. How this works is the soap goes into the milk finding the fat in the milk and wrestling jumping and bumping around the fat until it is contained, as this is going on of jumping fighting the fat the food coloring is creating a very colorful view of a chemical reaction and change to the milk how it has made it a solute.

During the last lab, two properties were highlighted to facilitate the experiment. This lab had demonstrated the use of the properties of hydrates and the law of conservation of mass using hydrates. There were four differents experiment which were used to defined the final product. Hydrates being defined as compound were combined with water. Water had played a big role in some part of the experiment.

My thematic unit resource project focuses on concept exploration of water. It is something that is found all around us, has cold and warm properties, is odorless and tasteless (Davis, G. A., & Keller, J. D. 2009) and most importantly, it is something that children find interesting and are curious about. And the three most basic forms of water that we are all aware of are solid, liquid and gas. Each form can be broken down into many other types of water found in nature. Ice is a solid type of water, while water we drink is a liquid and vapor is a gas. Science concepts that are used during a water unit includes the study of physics (flow and motion), chemistry (solutions, cohesion), biology (plant and animal life) and mathematics

Water is essential for life as we know it on earth. It is used by plants

The first two parts of the experiment looked at solubility, where part one looked at organic compounds and part two looked at alcohols. The solvents used in the first part were water, methanol, and hexane; decreasing in polarity respectively. Compounds that have the same polarity (both polar or both nonpolar) tend to dissolve when mixed with each other. This is shown when malonic acid (C3H4O4) is mixed with water (12 seconds) or methanol (instantly) and only one layer of liquid is formed. Also, malonic acid mixed with hexane formed two layers (insoluble) supporting the claim a nonpolar compound (hexane) and a polar compound do not readily dissolve.

Conversely, it was not going well at the start of the activity because Jenny tried to create mixture colours then the mixture colours became dark coulours which could not see whether the second layer was sits on the bottom layer. This mistake would not happen in the future as I will show the children the way to do this activity and they can practice by themselves. At last, it is important to find an experiment that children feel interesting so they would engage within the experiment. In contrast, students will fail to learn if they feel disinterested, tired and scared in a science inquiry

Water is commonly called a ‘universal solvent’ as it can commonly easily dissolve other natural charged molecules due to its hydrogen bonds and polarity. The polarity in water makes it easy for hydrogen bonds to form and dissolve polar molecules as the ions interact with the positively charged hydrogen and negatively charged oxygen.

Place a haloalkane in a beaker of water and identify if it soluble. Students in pairs reason why the observations are seen.