SNC 2DO EXAM REVIEW January 2014 The exam is based on the entire semesters work. Chemistry 1. Label the following on a periodic table: a) Alkali metals b) Alkaline earth metals c) Halogens d) Noble gases 2. Indicate the metals‚ non-metals and metalloids. -38100431803. Show the trends for reactivity and atomic radius. 4. Which of the following elements has the largest atomic radius? Why? a) fluorine b) oxygen c) nitrogen d) calcium Calcium has the largest atomic radius
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Earth’s four spheres Hydrosphere - dynamic mass of liquid that is always on the move Oceans - the most prominent feature of the hydrosphere 71% of Earth’s surface is covered by ocean which is 97% of Earth’s water Only 3% is fresh water - streams‚ lakes‚ glaciers and underground supplies Water Cycle - constantly recycles water Atmosphere Provides us with the air we breathe Protects us from the sun’s intense heat and radiation Protects us from space Biosphere Includes all life on Earth Interacts and
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I. INTRODUCTION The country faces so many problems nowadays. There are the natural calamities that happened especially when rainy season. Like the flood that happened only this past year in Manila that caused different diseases to the people. We all know that the caused of the flood was the scattered garbage that when it rains they gather in one place that causes overflow in canals. If we cannot dispose properly these garbages‚ it will cause problem in the environment and
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General Studies Unit Kaduna State University‚ Kaduna Kaduna State‚ Nigeria GST 203 HISTORY AND PHILOSOPHY OF SCIENCE LECTURE NOTES COURSE INTRODUCTION: This course is designed with the objectives of not only educating students on the historical developments that have taken place in the fields of science and technology and the philosophical basis on which achievements were made but to stimulate discuss and interests in the minds of students irrespective of the course they offer in the
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CHAPTER I INTRODUCTION Technology advancement through the years have changed people’s lives and opened new horizons. Technology is fast paced and it is becoming more advanced and sophisticated day by day. Game design and production is a fast paced‚ hit-driven‚ technology-based field. Hardware used in game consoles and personal computers continues to improve‚ getting faster and cheaper at a dizzying pace. This new project with increases the computational resources‚ and a long list of cool features
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effects of human activity‚ protecting human population from the effects of adverse environmental factors and improving environmental quality for human health and well-being. The Environment * Global * Consists of the atmosphere‚ the hydrosphere and the lithosphere * Local * Constrained Life sustaining resources are withdrawn from the biosphere and wastes are discharged into the biosphere. Waste discharge degrades the local environment and natural systems restore the degraded quality
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1. Indicators were identified with the observation that the colour of some flowers depend on soil composition Classify common substances as acidic‚ basic or neutral * An acid is a substance which in solution produces hydrogen ions‚ H+ or more strictly H3O+‚ sometimes called hydronium ions * A base is a substance which either contains the oxide O2- or hydroxide ion OH- or which in solution produces the hydroxide ion. * A soluble base is called an alkali Common properties of all acids:
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organism‚ including men. One party if this global environment is the natural system. There are three components of the natural environment. These are: 1. Atmosphere (Moisture‚ gas‚ dust etc.) 2. Lithosphere (Mineral‚ rocks‚ soil etc.) 3. Hydrosphere (Oceans‚ lakes‚ rivers etc.) Each of these environmental components has resources such as coal from the ground‚ fish from the rivers or crops from the soil that are utilized economically and ultimately marketed in some form. The living
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A microorganism (from the Greek: μικρός‚ mikros‚ "small" and ὀργανισμός‚ organismós‚ "organism") is a microscopic organism‚ which may be a single cell[1] or multicellular organism. The study of microorganisms is called microbiology‚ a subject that began with Antonie van Leeuwenhoek’s discovery of microorganisms in 1675‚ using a microscope of his own design. Microorganisms are very diverse and include all the bacteria and archaea and almost all the protozoa. They also include some members of the
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WTHESIS STATEMENT: “BIOCONVERSION OF WATER HYACINTH (EICHHORNIA CRASSIPES) TO ETHANOL.” 1. INTRODUCTION Water hyacinth (Eichhornia crassipes) is a free-floating or rooted in mud plant or weed which can totally cover fresh water lakes‚ harbors‚ and other essentially relatively occluded fresh water bodies. It is a fast growing permanent aquatic plant that are extensively scattered all throughout the world. This tropical plant can be the reason for the infestation over large areas of water resources
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