BIOLOGY 22 MODULE 1 – Chemical Basis of Life v2.0 * Levels of Organization – biological functions are ultimately based on the properties of atoms and molecules * Subatomic particles – neutrons‚ electrons‚ protons * Atoms * Compounds * Complexes of compounds * Organelles – bodies within cells that perform specific functions * Cell * Specific combination of organelles * Can metabolize and reproduce * Least elaborate living structure * Significance
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Chemical Reactions Lab Synthesis Reactions: Synthesis reactions occur when two elements or compounds combine to create one single compound. The general equation of synthesis reactions is: A+B→AB. The following are the complete balanced equations for the five synthesis reactions performed in the lab. Reaction 1: Reaction 2: Reaction 3: Reaction 4: Reaction 5: The reaction of CO2 and water is a prime example of a synthesis reaction. This is a synthesis reaction because it follows the general
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abused in the development of this drug. Which raises the question of the legality of this drug? Reports and studies have shown that this synthetic cannabinoid has extreme side effects with a possibility of life altering long term effects. Since the chemical compound is so new the possible long term effects can not be announced. People are starting to use JWH-018‚ which is also referred to as Spice‚ K2‚ or incense. I’m sure that there are many reasons as to why people are choosing this new drug.
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Name: Marisa Malazzo Date: 7/17/14 Exp 1: Observations of Chemical Changes Lab Section: 76426 Data Tables: Part 1: Chemicals Well No. Observations of the Reaction A. NaHCO3 + HCl no color change‚ some small bubbles formed B. HCl + BTB changed a yellowish orange color‚ no bubbles or precipitation C. NH3 + BTB changed a blue color D. HCl + blue dye changed a green color E. Blue dye + NaOCl no chemical change‚ only blue color appeared with the 1 drop of HCl
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INTRODUCTION: This lab was based on the separation of the components of a mixture. A mixture can be defined as a physical combination of two or more pure substances. Separation techniques are used to separate components that are not chemically combined. All of these techniques involve changes in the physical state of a chemical compound rather than chemical changes. The three objectives in this lab were 1. Learn the different separation techniques which include; sublimation‚ extraction‚ decantation
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(Date) Summary of chemistry lab report Introduction The two factors which affect the yield of products in a chemical reaction is the amount of starting materials (reactants) and the percent yield of the reaction. Many experimental conditions for example temperature‚ and pressure can be adjusted to increase yield of the desired product‚ in chemical reaction‚ but because chemicals react according to fixed mole ratios( stoichometrically)‚ the only limited amount of product can form from given amount
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drugs that the substance is likely to be. These types of tests are useful when they provide positive results and when they provide negative results‚ since the forensic scientist can then rule out certain types of drugs from the possibilities. 3.) Color tests involve introducing a chemical reagent to the drug and observing whether or not the material changes color. They are used to determine whether a drug is present at the scene. 4.) Microcrystalline tests involve exposing the substance to a reagent
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Ingredients in Cigarette Stearic Acid is a waxy white substance that is a fatty acid. It is found in nature in animal and vegetable fats‚ and is a component that is used to make candles‚ plastics‚ oil pastels‚ and cosmetics. Stearic acid is also used in lubricating mixtures‚ waterproofing materials‚ varnish driers‚ and as an emulsifying agent. It’s addictive‚ however it is non-toxic. A study which was done in Sweden shows that Stearic acid is a risk factor for breast cancer. Stearic acid is used
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looked at its physical properties. Then the scientists thought about the chemical reactions‚ and how that will help the claim the scientists had. More than half of the scientists thought it was baking soda and citric acid. When combining baking soda and citric acid together‚ the physical properties are very similar. Mystery mixture has a variety of sizes from the crystals with powder over it. Also from the powdery substance in it. There is no exact size for the mystery mixture. The claim the scientists
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and preserved by them as well. A few of the physical evidence that will be reviewed are; trace evidence‚ fingerprints‚ and footwear impression and tool marks. The physical evidence known as trace evidence can be gunshot residue‚ paint residue‚ chemicals glass‚ and illicit drugs. When an investigator is gathering this evidence they may use tweezers‚ plastic containers that have lids‚ a knife‚ and a filtered vacuum device. With certain physical evidence they will need to use a biohazard kit. This
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