They can be identified by a color change, if a new gas is given off, if a precipitate or new solid forms, and if light, electricity, or heat is given off. b. observations- The observation that was made was that there was going to be many different experiments set up. Each of the experiments that were going to be set up would have a chemical change or physical change take place. c. purpose-The purpose of this experiment is to find out how to differentiate a…
1) What is the first and last name of the incumbent, and what is their official title? (e.g. Assistant Director John Smith) Constance Ewing, Analytical Chemist II 2) How did you identify the incumbent? Constance Ewing also has a hairstyling and cosmetic business which operates on the weekends.…
All of theses reactions was needed in ordered to be prepared for the lab experiment. Before the lab began it was necessary to follow the lab safety rules by wearing a lab coat, googles, and gloves. There were nine unknown chemicals in nine plastic droppers labeled from one to nine sitting at the label tables. There were nine clean test tubes that were provided in order to mix the chemicals together. 10 drops of each unknown chemical was added when being mixed in test tube to perform a reaction.…
Figure 2 shows the reaction in action. Before long less Zinc became visible at the bottom of the beaker. Copper became visible at the bottom of the beaker all at the same time. The bottom of the beaker released bubbles, or hydrogen gas, from the reaction. The reaction for this particular experiment is a single replacement reaction.…
1. The reported mole ratio of magnesium to oxygen will be too high. The experiment will have less oxidation while burning. Since there are 2 oxygen and some of the magnesium evaporates as it burns, the ratio will be higher than usual 2.…
We conducted the experiment one more after analyzing our whole procedure twice; this time she tilted the tube at a 45 degree angle. Ssssshh shck shck block bop bop bop bop, the firework was a shade of purple you would see only at dawn or dusk: the light within it illuminating and mystic. The girl was ecstatic; she was able to analyze the experiment and change the apparatus so that results could be yield correctly. I helped conduct this experiment at the summer camp sponsored by the University of Oklahoma Future Health Scientists Partnership Program. I have been apart of Future Health Scientists since I was ten.…
This reaction could have resulted in a new substance being produced. The new substance could have been produced by the mixing of calcium chloride and sodium bicarbonate and the production of…
Instructions: Buddy Lab - Physical and Chemical Change You’ve learned a lot about matter lately and now is your chance to teach someone younger about what you know. Your job is to design a lab that will help a primary student experiment and understand what physical and chemical changes are. Follow the guiding questions below to help you create your lab. Question:…
Response to “The Transaction” by William Zinsser “The Transaction.” Upon reading its title, I would not have expected William Zinsser’s work to concern writing; monetary or some similar business exchange is what I had anticipated. However, the nature of an exchange is present, though, in the form of information: the exchanging of different ideas (“…he was interested in my answers…I was interested in his answers).” With this, textual evidence supports that Zinsser uses the context of a transaction in order to easily apply a comparison and contrast technique. Moreover, the technique itself provides a prime illustration of how variable writing can be, thus, proving to reflect one’s variable emotions.…
It doesn’t matter what you use your wood for, in a stove, bon fire, fireplace, fire pit, furnace, etc. you always can enjoy the glow and warmth of the fire, but what kind of wood is the most flammable to give you the glow and warmth of the fire quickest? Oak is the most widely used hardwood. (2)…
Aha Thesis The purpose of this unity was to learn how new substances formed and what happened when they are formed. Some of the key ideas addressed in this unit are: chemical and physical reactions, the law of conservation of mass, and ionic/covalent bonding. In a chemical reaction, something new is created, different from what created it, a new substance is formed. In a physical reaction, the appearance of the object is changed, but nothing new is created. An example of a chemical reaction would be lighting paper on fire, you're creating ash, which is a new substance.…
Unit/Topic: (Alternate conception): ‘Mixtures are only used for cooking’ Year Level: 2 Students: approx. 26 Time: 40mins Context: Many younger students have only ever been exposed to the term ‘mixtures’ when referring to mixtures made in the kitchen.…
In this experiment, two cations in an unknown solution were found using qualitative analysis. For Part A, the solution was to contain either silver or lead, while in Part B, the solution that was set on the side form Part A was identified to contain either calcium or barium. Part C explored a different method through the use of cation flame tests to observe colored flames from six metal chloride solutions. In Part A, the initial step was to add HCl to the unknown sample.…
Introduction: A chemical reaction occurs when you mix baking soda and vinegar. The type of reaction that occurs when you mix the two is called a chemical reaction, the chemical property that is used is called reactivity. Some of the evidence that proves that a chemical change is occurring is when you start to hear a sizzle sound and gas starts to be produced. When the gas starts to produce you will see the bubbles start to rise.…
The burning of magnesium in open air causes a chemical reaction that forms the compound, magnesium oxide. This reaction occurs due to the heat that provides energy to activate the reaction. A blinding white flame will burn as the reaction occurs. In this lab, magnesium is burned in an open crucible over a Bunsen burner several times until the magnesium ceases to burn. This process allows for the magnesium to completely react with the oxygen found in the open air, forming the chemical compound magnesium oxide.…