Properties of life‚ Basic Chemical Terminology‚ Molecules and Compound of a cell Properties of life: All living things are made of cells and keep certain characteristics in common. All living things are divided into several characteristics: order‚ reproduction‚ growth and development‚ energy processing‚ respond to the environment‚ regulation and evolution. Cells are either made of prokaryotic or eukaryotic. Prokaryotic is simple‚ small and lacking membrane-enclosed membrane. Eukaryotic
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01/03/2012 SOIL COMPOSITION SOIL COMPOSITION Generally soil can be divided to three components in natural occurrence This separation know as three phase systems or three phase diagram It consists of soil solids‚ water and air 1 01/03/2012 Soil components in natural occurrence Volume-Weight relationships As a result from 3 phase diagram several relationship were produce This relationship known as volume weight relationships. Refer to 3 phase diagram 2 01/03/2012
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THE CHEMICAL COMPOSITION OF AQUEOUS SOLUTIONS (pp. 94-98) Electrolytes – forms ions when dissolved in water (or certain other solvents) and thus produce solutions that conduct electricity. Strong electrolytes – ionize essentially completely Weak electrolytes – ionize only partially Solution of weak electrolyte will be a poorer conductor than a solution containing an equal concentration of a strong electrolyte Brønsted-Lowry theory Acid is a proton donor Base is a proton acceptor H2O + HNO2 H3O+ +
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a crustal structure and a definite chemical composition Rock- a large mass of stone Organic- derived from living organisms Inorganic- not derived from living organisms Pure Substance- a form of matter that has a constant chemical composition and characteristic properties. It cannot be separated into its several components without breaking its chemical bonds. Element- a substance composed of a single kind of atom Molecule- the smallest physical unit of an element or compound‚ consisting
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3 Basic manufacturing cost categories: Direct Materials Cost: The materials that go into final product are called raw materials. Direct Labor Cost: The term direct labor is reserved for those labor costs that can be essentially traced to individual units of products. Direct labor is sometime called touch labor‚ since direct labor workers typically touch the product while it is being made. Manufacturing Overhead Cost: Manufacturing overhead‚ the third element of manufacturing cost‚ includes
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Chemical Properties of Egg Tempera Art is traditionally viewed as a creative process far removed from science. However‚ beyond the imaginative efforts that contribute to the creation of a work of art are the physical materials that are used as the medium. While science is not an essential part of the thought and design process‚ an understanding of the chemical properties of different art media is integral to creating a work of art that will not only match the artist’s vision but will also stand
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Patrick Kelly 10/16/12 Physical and Chemical Changes Lab Question: How do you distinguish a physical and chemical change? Hypothesis: If we use these materials and use magnets‚ water‚ burners‚ and filters on the mixtures and elements given we should determine what kind of effect these materials given will have on these mixtures and elements‚ physical or chemical. Procedures: -Part A: Record all observations of Part A in Data Table 1 1. Label each substance on seven pieces of paper
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protein that our bodies make. Similarly‚ the DNA of each plant and animal seems to be ultimately responsible for the size‚ shape and function of every protein that each of them makes. We will now take a small overview on history‚ physical properties ‚ chemical properties of DNA. Overview on History : DNA was first isolated by Friedrich Miescher ‚ who in 1869 discovered a microscopic substance in the pus of discarded surgical bandages that he called ‘NUCLEIN’ Finally in 1953‚ working together at
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Department of Chemistry Physical and Chemical Properties Submitted by: Date Submitted: 2/2/2014 Date Performed: 1 Lab Section: Course Instructor: PURPOSE: To identify chemical and physical change in matter. PROCEDURE: Finding out the physical and chemical change in matter. There was seven different substances that were being tested; Mossy Zinc (Zn)‚ Magnesium (Mn)‚ Copper (Cu)‚ Magnesium Oxide (MgO)‚ Copper II Nitrate (Cu(NO3)2)‚ Copper II Carbonate (CuCO3) and Sodium Chloride
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MODULE 1: THE CHEMICAL EARTH 3.1.1: Elements in Earth are present mostly as compounds because of interactions at the atomic level * Identify that matter is made of particles that are continuously moving and interacting Matter: anything that has mass and occupies space. Exists in three different states: solid (s)‚ liquid (l) and gas (g) The Particle Theory: “All matter is made up of small‚ indivisible particles called atoms that are continuously moving” | Solid | Liquid | Gas | Particle
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