Physical and Chemical Reactions Lab #4 Alesa Cannon Objective: To investigate the physical and chemical properties of a pure chemical substance. Procedure: 1. Half-fill one well of a 24-well plate with 6 M HCl and half-fill a second well of the 24-well plate with 6 M NaOH. Suck up these chemicals into their labeled pipets for later use. 2. Perform the following steps on each of the substances to be tested. Complete all tests of one substance and record your observations before proceeding
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One property of water that makes life possible on earth is its solid state‚ (frozen).Water is less dense as a solid than it is as a liquid‚ which enables ice to float. When its temperature falls below 4 degrees Celsius‚ the molecules slow down to a point where they are not moving fast enough in order to break the hydrogen bonds‚ therefore making the bonds more stable. The bonds then are farther apart‚ making the solid less dense. Water is one of the few molecules that has this property‚ allowing
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What Factors Affect Chemical Equilibrium? Introduction: In investigation 14‚ “What Factors Affect Chemical Equilibrium?”‚ the purpose was to find out which reagents caused a change in the chemical equilibrium. A deep red color was formed when Iron Nitrate [Fe(NO3)3 (aq)] was mixed with water and Ammonium Thiocyanate [NH4NCS (aq)]. The product of these two reactants was Iron Thiocyanate(FeNCS). After different trials of mixing the given reagents
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Stazi Belvin Chemical and Physical Lab Changes Lab Report 9/5/2014 I. Purpose- The overall purpose of the lab is to identify chemical and physical changes. II. Safety- To work with the chemicals used in the lab‚ it is required to wear safety goggles to protect your eyes from the fumes when working with the chemicals. It is also required to be cautious when working with the acids used in this lab because they can cause burning and irritation of the skin. Also‚ be cautious as to not inhale the
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Aaron Wirth Complete List Of Visual Basic Commands Note: To go to pages use the Page function in the View – Go To menu‚ shortcut: Shift + Ctrl + N. Press Ctrl + Home to return to Table of Contents. Table of Contents Strings (P3) Left and Right functions (P3) LCase and UCase functions (P4) FormatDateTime (P6) Len Function (P7) InstrRev (P9) Replace Function (P10) Base 0 & 1 (P3) Formatting (P4) Mid function (P7) InStr (P8) Asc Function (P9) StrComp (P10) Trim‚ LTrim‚ and RTrim functions (P3)
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Purpose: To investigate the difference between physical and chemical changes in matter. Materials: Safety glasses 13 small test tubes Test tube rack Test tube holder 2 100-mL beakers Funnel Watch glass Stirring rod Evaporating dish Magnet Magnifying glass Crucible tongs Spatula Balance Meeker burner Ring stand Iron ring Wire gauze Forceps Sulfur Iron filings Sodium Bicarbonate Sodium Chloride Sugar Sand Magnesium ribbon Hydrochloric Acid Distilled water Filter paper
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Cultural‚ Biological‚ Physical and Chemical An entirely different perspective is brought into focus as we consider some of the environmental hazards that accompany industrial growth and intensive agriculture. Some of the most dangerous hazards in this world are the outcome of purely voluntary behavior --- in particular‚ smoking tobacco and engaging in risky sexual activity. We will look at four classes of environmental hazards: Cultural‚ Biological‚ Physical and Chemical (Wright & Boorse‚ 2011)
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Basic Algebraic Properties of Real Numbers The numbers used to measure real-world quantities such as length‚ area‚ volume‚ speed‚ electrical charges‚ probability of rain‚ room temperature‚ gross national products‚ growth rates‚ and so forth‚ are called real numbers. They include such number as ‚ ‚ ‚ ‚ ‚ ‚ ‚ and . The basic algebraic properties of the real numbers can be expressed in terms of the two fundamental operations of addition and multiplication. Basic Algebraic
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Schindler’s List Essay Some say that during the Holocaust‚ Jews “went like sheep to the slaughter.” Overall‚ does the movie confirm or contradict this statement. Consider large and small acts of resistance‚ which you saw in the movie Schindler’s List. Overall‚ does the movie confirm or contradict this statement? Please use specific examples to back up your analysis! Overall‚ the movie Schindler’s List contradicts this due to the fact of their minor and major resistances of what the Nazis were
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The earth has not always looked the way it looks today. In other words‚ the United States one billion years ago was in a totally different location than it is today!! How does this happen? And why does this happen? Let’s take a look. In order for us to get some understanding of how the earth has changed over time‚ we first need to understand some of the things that took place‚ and are still taking place‚ in the earth. What about the internal structure of the Earth? Our best clues about the interior
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