Key Terms * species-A species is a group of similar organisms that can mate with each other and produce fertile offspring. * fossil-A fossil is the preserved remains or traces of an organism that lived in the past. * adaptation –A trait that helps an organism survive and reproduce. * evolution-The gradual change in a species over time is called evolution. * scientific theory -A scientific theory is a well-tested concept that explains a wide range of observations. * natural
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all times 2. Neutralize acid spills with saturated sodium bicarbonate 3. Chlorinated carbon is toxic‚ targets liver and kidneys 4. Do not breathe any chemical‚ or get on skin 5. 12M HCl highly corrosive 6. All parts of experiment done under hood Experimental The procedure for this experiment appears on pages 4 and 5 on hand lab #6 Preparation of 2-chloro-2-methylbutane-An Sn1 Reaction [1]. In this experiment‚ the instructor requested that 4 ml diethyl ether be added to the solution in the conical
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Absorbance of Light vs. Concentration of Colored Solution Introduction: Performing this lab showed the importance of light in virtual drug screening because light can be used in a variety of ways to obtain different kinds of information in research. Light can be used to determine the concentration of DNA or protein in solution‚ tag different objects such as cells‚ protein structures‚ or bacteria in order to determine whether there is a large amount of a certain substance‚ and to determine the size
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Connor Shortall AP Biology Vocabulary List for Chapters 1-5 Chapter 1 Properties of life a. Order: Molecules in living things are arranged in specific structures. b. Reproduction: Organisms will reproduce their own kind; life comes from life c. Growth & Development - DNA directs the pattern of growth and development‚ producing an organism that is characteristic of its species d. Energy Processing- Organisms take in energy though various methods and make it usable e. Response to the Environment -
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CHAPTER II REVIEW OF RELATED LITERATURE AND STUDIES This chapter includes related literature and studies with regards to Library Management System. Below are following Foreign and Local Related Literature and Studies. A computerized library system for a school keeps track of all books and periodicals in the library and their check-out status. The library system also interfaces with an external relational database which stores information about the library users (students‚ faculty‚ and staff)‚
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the reaction. 2 Fe + 3 CuSO4 = 3 Cu + Fe2(SO4)3 The new product is iron (III) sulfate‚ it contains the Fe 3+ ion which is brown. Lead (II) nitrate and potassium iodide solutions Pour about 2.0 mL of lead (II) nitrate into the test tube. Add 5 to 10 drops of potassium iodide solution to the test tube and record your observations of the reaction. Pb(NO3)2 + 2 KI = 2 KNO3 + PbI2 2. Magnesium metal and hydrochloric acid solution Place one scoop of magnesium turnings into the test tube
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In chapter five of Frankenstein‚ the image of the weather and the creature before it comes to life creates an exciting‚ emotional atmosphere the contrasts Victor’s feelings of depression and disgust after the creature comes to life. Victor begins to describe the scene by saying the ¨the rain pattered dismally against the panes”(Shelly 42). Although this trivial detail appears irrelevant to the creation‚ a small feature like the rain in this instance builds up the anticipation because the detail of
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Assignment Chapter 2 Concept Explorations 2.25. Average Atomic Mass Part 1: Consider the four identical spheres below‚ each with a mass of 4.00 g. a. Calculate the average mass of a sphere in this sample. (4.00 + 4.00 + 4.00 + 4.00)/4= 16.00/4= 4.00g Part 2: Now consider a sample that consists of four spheres‚ each with a different mass: blue mass is 4.00 g‚ red mass is 3.75 g‚ green mass is 3.00 g‚ and yellow mass is 1.25 g. * a. Calculate the average mass of a sphere in this sample
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significant figures *0.1356 -> 0.14 *314.705 (6 significant figures) -> Round number to 4 significant figures. *314.705 -> 314.7 *0.0035771 (5 significant figures) -> Round to 3 significant figures. *0.0035771 -> 0.00358 *500‚000 (1 significant figure) -> Write this number to have 3 significant figures. *500‚000 - 5.00 x 10^5 *39.501 -> Round to 2 significant figures. *39‚501 -> 4.0 x 10 *0.054961 -> Round to 3 significant figures. *0.054961 -> 5.50 x 10^-2 or 0.0550
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estimate or calculate the density of the choices)? a. 1000 g of water at 4 oC b. 100.0 cm3 of chloroform‚ which weighs 148.9 g c. a 10.0 cm3 piece of wood weighing 7.72 g d. an ethyl alcohol ‑ water mixture of density 0.83 g/mL. __a___ 5. The scattering of alpha particles by thin metal foils established that a. the mass and positive charge of an atom are concentrated in the nucleus. b. electrons are fundamental particles of all matter c. all electrons have the same charge
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