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    explosives and air bags

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    explosion. f) Try to make the reaction endothermic instead of exothermic. g) Reaction 1: decomposition Reaction 2: single displacement Reaction 3: Synthesis h) It is incorporated because it reacts very quickly with sodium and releases sodium oxide. 1. It must produce heat when it reacts‚ it must produce gases as products‚ it must react very quickly‚ and it must be stable enough so that it can be exploded in controlled manner. 2. There can be a factor such as concentration or temperature

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    The Nitrogen Cycle

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    Nitrogen cycle Nitrogen gas is a colourless‚ odourless and non-toxic gas which makes up about 78 percent of the atmosphere. Nitrogen is extremely important to living material; in fact plants‚ animals and humans could not live without it. Sprent (1987) argued that nitrogen cycle is the most important process to living organisms after the carbon cycle. But nitrogen exists as dinitrogen (N2) in the atmosphere‚ which living things‚ particularly plants‚ cannot synthesize (citation) The process of nitrogen

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    |c. |nitrogen(II) oxide | |b. |nitrogen dioxide |d. |nitrogen oxide(II) |     ____  29.   Name the compound SO2 using the Stock system. |a. |sulfur(II) oxide |c. |sulfur dioxide | |b. |sulfur(IV) oxide |d. |sulfur oxide

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    the atmosphere warm a planet’s lower atmosphere and surface. Human activity since the Industrial Revolution has increased the amount of greenhouse gases in the atmosphere‚ leading to increased radiative forcing from carbon oxide‚ methane‚ troposphere ozone‚ CFCs and nitrous oxide. The destruction of stratospheric ozone by chlorofluorocarbons is sometimes mentioned in relation to global warming. Although there are a few areas of linkage‚ the relationship between the two is not strong. Reduction of stratospheric

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    Alkaline Earth Metals

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    Why are the called alkaline earth metals  The alkaline earth metals are named after their oxides‚ the alkaline earths‚ whose  old­fashioned names were beryllia‚ magnesia‚ lime‚ strontia‚ and baryta. These oxides are  basic (alkaline) when combined with water. "Earth" is an old term applied by early chemists to  nonmetallic substances that are insoluble in water and resistant to heating—properties shared  by these oxides.     Physical Properties of Alkaline Earth metals    1. They normally conduct electricity well

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    Hujan Asid

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    addition‚ acid rain accelerates the decay of building materials and paints‚ including irreplaceable buildings‚ statues‚ and sculptures that are part of our nation’s cultural heritage. Prior to falling to the earth‚ sulfur dioxide (SO2) and nitrogen oxide (NOx) gases and their particulate matter derivatives—sulfates and nitrates—contribute to visibility degradation and harm public health. Acid rain causes acidification of lakes and streams and contributes to the damage of trees at high elevations (for

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    Air Pollution 19

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    A RESEARCH ON AIR POLLUTION NOWADAYS PROF. MADYA ZAMRI ABDUL RAHMAN LECTURER FATIN ADAWIYAH MOHAMAD PAUZI 2007288974 HAFISHAH HALIM 2007288918 MAZMIR MAT NOH 2007288996 [pic] UNIVERSITI TEKNOLOGI MARA MALAYSIA 20 AUGUST 2007 TABLE OF CONTENT 1.0 ABSTRACT 3 2.0 INTRODUCTION 4 3.0 PROBLEM DEFINITION 5 4.0 METHOD OF SOLUTION 5 5.0 RESULT AND DISCUSSION 5 6.0 CONCLUSION 5 7.0 REFERENCES 5 8.0 APPENDIX 5 1. ABSTRACT In recent years‚ our environment

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    Ordinary Portland Cement

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    Case Study: Ordinary Portland Cement INTRODUCTION • Cement – Is a material with adhesive and cohesive properties which is capable of bonding mineral fragments into a compact-solid whole • Ordinary Portland Cement (OPC) – Is a hydraulic cement. It is used in the making of concrete with property of setting and hardening‚ of which when the chemical properties reacts with water. OPC Does not disintegrate in water as it sets and hardens in water • Reason of widely usage in Malaysia – Is because

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    Chemistry notes

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    carbonate carbon dioxide gas + salt + water Formation of hydronium: H+ + H2O H3O+ Reactions of various oxides with water: Non-metal (acidic) oxides: CO2 (g) + H2O (l) H2CO3 (aq) (carbonic acid) SO2 (g) + H2O (l) H2SO3 (aq) (sulfurous acid) 2NO2 (g) + H2O (l) HNO3 (aq) + HNO2 (aq) (nitric and nitrous acid) P2O5 (g) + H2O (l) 2H3PO4 (aq) (phosphoric acid) Metal (basic) oxides: K2O (s) + H2O (l) 2KOH (aq) (potassium hydroxide) Na2O (s) + H2O (l) 2NaOH (aq) (sodium hydroxide)

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    Chem Ws

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    _____________________________ _____________________________ ______________________ _____________________ ____________________ __________________ ___________________ Q3. Give one example of each: a) b) c) d) e) f) g) An acidic oxide A basic oxide An amphoteric oxide A neutral oxide A metal and a non-metal which are in liquid state at room temperature. An element stored in kerosene. A soft metal that can be cut through knife. Q4.Define the following terms: a) Single displacement reaction b) Electrical

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