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Matter

APHuG glossary

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Human Geography
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Sulfur
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Rubenstein

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Acid deposition Sulfur oxides and nitrogen oxides, emitted by burning fossil fuels., enter the atmosphere ? where they combine with oxygen and water form sulfuric acid and nitric acid ? and return to Earth?s surface Acid precipitation Conversion of sulfur oxides and nitrogen oxides to acids that return to Earth as rain, snow, or fog Agribusiness Commercial agriculture characterized by the integration of different steps in the food-processing industry, usually through ownership by larger corporations Agricultural density

Chemistry Honors Semester 1 Study Guide

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Makana Roh Chem H Semester 1 Chapter 1: Intro to Chemistry Chemistry- the study of matter and the changes that it undergoes Matter- anything that has mass and takes up space Mass- a measure of the amount of matter Weight- a measure not only of the amount of matter but also the effect of Earth?s gravitational pull on that matter Scientific method- a systematic approach used in scientific study that typically includes observation, a hypothesis, experiments, data analysis, and a conclusion Qualitative data- information describing color, odor, shape, or some other physical characteristic Quantitative data- numerical information describing how much, how little, how tall, how fast, etc. Hypothesis- a tentative, testable statement or prediction about what has been observed

Arrangement of Electrons in Atoms Vocabulary Terms

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electron configuration

Amplitude ? magnitude of change within an oscillating system of the oscillation variable with each oscillation Angular momentum quantum number ? the quantum number that indicates the shape of an orbital Atomic emission spectrum ? the range of the frequencies of electromagnetic radiation Aufbau Principle ? the principle that states that the structure of each successive element is obtained by adding one proton to the nucleus of the atom and one electron to the lowest-energy De Broglie?s Relation ? said that particles can exhibit wave-like behaviour Electromagnetic radiation ? the radiation associated with an electric and magnetic field. Varies periodically and travels at the speed of light Electromagnetic spectrum ?all of the frequencies or wavelengths of electromagnetic radiation

biology

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CNote
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water
Water is the most unique molecule in our lives. Water is a substance that gives the possibility of life on this Earth as we know it. All organisms that we are accustomed to are made up of mostly water and are habitually accustomed and dominated to water environments. Earth started out in water before land was even present. Our lives remain tied to water and all living creatures need water more any natural habitat that can be found as a solid, liquid or gas. The large quantity of water is the main reason we are able to reside on this beautiful home we call Earth.

Fun facts about Calcium

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Calcium
http://www.facts-about.org.uk/science-element-calcium.htm Name of Element : Calcium Symbol of Element : Ca Atomic Number of Calcium : 20 Atomic Mass: 40.078 amu Melting Point: 839.0 °C - 1112.15 °K Boiling Point: 1484.0 °C - 1757.15 °K Number of Protons/Electrons in Calcium : 20 Number of Neutrons in Calcium : 20 Crystal Structure: Cubic Density @ 293 K: 1.55 g/cm3 Color of Calcium : silvery Facts about the Definition of the Element Calcium The Element Calcium is defined as...

Empiricl Formula Lab Write up

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Magnesium
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5. Empirical Formula of a Compound Chem 1111 Revision S7 Page 1 of 6 Cautions Magnesium ribbon is flammable. Ammonia gas is toxic and harmful. Hot ceramic crucible and metal items can produce a severe burn. Purpose The purpose will be to determine the empirical formula of magnesium oxide by burning the pure magnesium metal in air. Introduction The simplest whole number ratio of moles of the elements in a compound is known as the Empirical Formula. This can be determined experimentally if a chemical compound can be synthesized from an element. This process requires three steps: 1. Determine the mass of each element in the compound 2. Calculate the number of moles of each element in the sample.

Alpha and Beta Particles

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Alpha and Beta particles can be both emitted and bombarded with other elements. If a beta particle is a emitted then the original element gains a proton. If a Alpha particle is emitted then the original element looses two protons. And vice versa if the particle is bombared.

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