HISTORY OF THE DODO BIRD The first documented appearance of the dodo bird is in the early 15th century by Dutch explorers. Dutch vice-admiral Wybrand Van Warwijck used the name “walgyogel” in his journal to describe the bird after his visit to the island of Mauritius in 1598. The origins of word dodo to describe the bird is still unclear‚ but some ascribe it to the Dutch word dodoaars referring to the birds knot of feathers. Even though the Portuguese visited the island first in 1507‚ no records
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The hypothesis If a chemical reaction occurs‚ then there will be indicators of a chemical change‚ was supported throughout this experiment. Throughout this experiment there were several reactions that took place‚ and an indicator of such chemical reactions could be seen throughout each one. The first piece of identifiable evidence was present in the first step‚ which was when copper (II) nitrate and sodium hydroxide were combined. When stirred‚ a blue precipitate formed at the bottom of the test
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Jeni Stepanek is a mother of 4 children‚ but 3 of her children died at the age of 4 because of the same disorder of Mattie. Mattie Stepanek is the youngest son of Jeni‚ who was born with the disorder called “Dysautonomic Mitochondrial Myopathy”. Jeni Stepanek share in this book “The Messenger” how intimate and inspiring her son’s life is. When Mattie was born with his disorder‚ Jeni was advised to let nature take its course to his son. She didn’t agree with that‚ but instead she supported
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changes are used to describe matter. A property is a trait of matter‚ when that sample of matter is in a fixed state. There are two different types of properties: physical properties and chemical properties. A change is something that alters the properties of a substance. There are two types of changes: chemical changes and physical changes. A physical property is a property that can be observed without changing the makeup (or composition) of a substance. Some examples of a physical properties
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Chemicals of Life • With the exception of water‚ virtually all chemicals of life are CARBON based • Molecules that contain Carbon are considered organic with some exceptions such as CO2 • Carbon has 4 valence electrons so it is oriented in a tetrahedron shape Sketch→ • Carbon can form up to 4 covalent bonds and can form long chains‚ rings‚ and branched chain molecules • Carbon acts as the backbone of biological molecules • Molecules that only contain carbon and hydrogen are known as hydrocarbons→
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Dropbox Quick Start What is Dropbox? Dropbox is a free service that lets you bring all your photos‚ docs‚ and videos anywhere. Any file you save to your Dropbox will also automatically save to all your computers‚ phones‚ and even the Dropbox website. This means that you can start working on your computer at school or the office‚ and finish on your home computer. Never email yourself a file again! The Dropbox Folder After you install Dropbox on your computer‚ a Dropbox folder is created. If you’re
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Blaise Medved Prof. DeVries Eng102 7 February 2014 In a Different Light It is quite hard to think of a villain making a warm and fuzzy impression. It is even harder to see thing through a villains eyes‚ truly understanding what they are feeling and why. For this to happen the reader must be left wondering about this villain. For this to happen‚ the reader must be able to relate to this villain. In “A Good Man is Hard to Find‚” O’Connor makes this happen. The villain in the short story
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Chemical Energetics All about enthalpy‚ calorimetry and the First Law of Thermodynamics A Chem1 Reference Text Stephen K. Lower • Simon Fraser University1 Contents Part 1: Energy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Part 2: Basic thermodynamics: what you need to know . . . . . . . . . . . . . . . . . . 5 Systems and surroundings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Properties
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This document of PSYCH 575 Week 2 Individual Assignment Neuron Worksheet consists of: Part I: In the text boxes provided‚ identify the structures of a basic neuron. Part II: In the space provided‚ explain the process a neuron undergoes when going from a resting potential to an action potential to the release of its neurotransmitters. Psychology - General Psychology PSYCH 575 Week 1 Individual Assignment Biological Psychology Worksheet · Complete the University of Phoenix Material: Biological
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INTRODUCTION TO CHEMICAL BONDS CHEMICAL BOND Definition: A chemical bond is defined as a force that acts between two or more atoms to hold them together as a stable molecule. Main types of bond: 1. Ionic or electrovalent bond‚ 2. Covalent bond‚ 3. Coordinate covalent bond Forth type of bond: Metallic bond: The type of bonding which holds the atoms together in metal crystal. Valence electron: The electrons in the outer most energy level in an atom that takes part in chemical bonding
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