Doc. Anthony Miller, a physicist, and an engineer, with him Doc. Stephen Strange who had the same expertise as Doc. Anthony Miller. They were transported to Area 51 which was a secret military facility, they were brought there to work on a project.…
R.C. 5.9 Mathematics (Mobile Infant) Activity: “Stack Them Up” Materials: Stacking blocks, nesting cups, measuring cups Infants are continually growing in all areas of development. In this activity, the goal is to get the infant to stack their blocks or cups. The teacher would have the child sit on the floor or at a table with their toys.…
The first step is to put on your goggles and apron. Then you need to gather your materials. You then need to make observation of the hydrate. Observe the color, state, texture, etc. to smell the unknown substance you need to waft the substance by slowly moving the smell of the liquid to your nose. Step…
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.…
-SiO2@ON/glass was coated with poly(methyl methacrylate) (950 PMMA C4, Micro Chem, 2 mL) by spin coating (500 rpm for 5 s, 1,000 rpm for 5 s, 2,000 rpm for 5 s, 1,000 rpm for 5 s, SP-7200GT spin coater, Intec systems). The plate was cut into 4 pieces of 1.5 × 2.5 cm2 area (Refer to Figure S3), and then added to 5% HF solution (100 mL). In the first 1 min, the glass plate was detached from S-SiO2@ON/glass and removed. The S-SiO2@ON was further etched for 2 h. Caution: HF solution is extremely dangerous to be inhaled and touch. Thus, it should be handled with extreme caution and specific gloves in a good hood.…
The simple reaction between two substances (Mg and HCL) was performed to determine how different factors such as, temperature, and concentration effects the rate of reaction. There were noticeable differences while determining the effects of concentration of HCL on the rate of reaction. Increasing in the concentration of the HCL, bottom of the test tube became hotter; it’s an exothermic reaction because energy is being released during the reaction in the form of heat. Another, increasing in concentration of HCL reacting with Mg, formation of hydrogen gas bubbles comes out faster and quicker the Mg gets invisible. Further, we record the time taken by each concentration to dissolve the Mg to plot the graph “concentration of HCl with respective…
In this lab, we carried out a variety of reactions using different chemicals and metals. A chemical reaction is when the chemical state of the substance you are testing rearranges its ionic and molecular structure. One of the reactions we experienced was single replacement, this consists of one ion switching places with another ion to form a new compound. Another reaction we saw was double replacement. In this reaction, two compounds ions are switched to form two new compounds.…
In this lab we learned about the writing and naming of chemical formulas. Chemical formulas are the expressions that indicate the number and type of atoms present in the smallest representative unit of a substance. Chemical formulas are written by determining the charges of both the cation and anion, then combining them in a way that produces a neutral compound. When naming chemical formulas we had to first write the name of the chemical then the second, adding -ide to the end of the second chemical, unless it was already a polyatomic ion. The polyatomic ion is placed into parenthesis to show that it is one unit.…
In the experiment hydrogen and the bubbles were put together and was set on fire to see what would happen or anything new would occur. Since We cannot see hydrogen because the element is a gas, the gas is put in with the bubbles. The bubbles are made from soap and the reaction would be different then, just lighting the hydrogen on fire. An interesting factor is the pressure of each bubble, due to its size is also how the reaction would be different or the same when lighted by the fire. The smaller bubble exploded on fire and much wider.…
In order to complete this experiment, students had to provide a great amount of focus and a good understanding of the procedures, which were, along with the materials, very detailed. With this being said, because most of the materials had similar names, it was important for students to not manipulate the lab by mixing up the reagents, which would completely ruin the experiment. The important factors that influenced the success of this experiment included the following: 1) 100% transfer, 2) 100% digestion, 3) controlling the amount of bacteria and metals absorbed from the surroundings, 4) excessive boiling of the product, 5) an error with the starch indicator, and 6) 100% reaction. Students also had to understand, like with every other lab completed in this course, that the weighing process created sources of errors as well, such as: not clearing the balance before weighing the samples, not weighing the samples at a…
The purpose of this lab is to understand the effect that dissolved impurities will have on the freezing point of a mixture and what additive will affect the the freezing point the most. The freezing point of a liquid is, the point of a substance when the temperature of the solid and the liquid is equal. When water freezes the water molecules become organized and come closer together forming crystal particles of ice. When a solute (like salt) and a solvent (like water) mix together the salt becomes an impurity and makes it so the solution can’t crystallize.…
Scenario 1 describes the reaction that takes place between H2 and I2 to form the acid HI. This reaction involves very intricate and steps that are critical to understanding the concept of equilibrium as a whole. First, an important concept to understand when describing any reaction is the idea of collision probability. When we examine gas molecules in a 1 cm3 container, there can be billions of collisions per second between neighboring molecules, and even then, maybe only one of these collisions result in a reaction. If any one collision occurs, the only way they will react to form a new molecule, in this case an HI molecule, is if they meet specific activation energy requirements.…
I. PURPOSE The purpose of this lab was to observe the physical properties of different samples of matter and to use your observations and knowledge of chemistry to classify each sample as an element, a compound or a mixture. II. MATERIALS 10 beakers containing different samples of matter III. PROCEDURE First off, put on a laboratory apron.…
1 There was no smell 2 When I pour the oil in the water I noticed the oil started to bubble to the top. So I got to stir the oil that’s when there were smaller bubbles. As I smell the water there was no smell to the water. 3 Pouring the vinegar in the water there was one change that I notice the water was darker after I added the vinegar.…
Conclusion: The the precipitation reactions lab eight out of the fourteen occurring reactions were precipitates. A precipitate means that a solid substance was formed or a substance that is not aqueous was formed. The reactions that did not form a precipitate were DNR, which means that they did not react. At station one barium chloride and potassium nitrate did not react but barium chloride and silver nitrate reacted to form barium nitrate and silver chloride. The precipitate at station one was silver chloride.…