Subject Content Most of the objectives specified in this section relate to Knowledge with Understanding‚ although some indication has been given as to where the skills of Handling Information and Solving Problems may be developed. Teachers are reminded that‚ in the written papers‚ 40% of the marks are allocated to these higher ’thinking’ skills. In almost every section‚ students should therefore be given practice at dealing with unfamiliar situations so that these higher thinking skills can be developed
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Chemistry Reference Tables Name Avogadro’s number Value 6.022 × 1023 particles/mole 0.0821 L atm mole K L mmHg 62.4 mole K 8.314 L kPa mole K 1.00 atm = 101.3 kPa = 760. mmHg = 760. torr 0°C or 273K 22.4 L Symbol Value Gas constant (R) Standard pressure Standard temperature Volume of 1 mole of any gas at STP Thermodynamic Constants Heat of fusion of water Heat of vaporization of water H f (water) Hv (water) 334 J/g 2‚260 J/g J for ice‚ 2.02 J for steam‚ g°C g°C J for liquid 4.18
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the ages by three means: 1. Solar energy 2. Biodiversity 3. Nutrient cycling There are three types of resources: I. Renewable resources. Ex: soil‚ air‚ water‚ forests II. Non-renewable resources. EX: Petroleum‚ Coal‚ Natural Gas‚ metallic minerals‚ non metallic minerals III. Perpetual resources. Ex: Solar Energy The sustainable yield of resources is the maximum yield that humans can utilize without reducing available supply or causing that resource to seize to exist An economic growth is a
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Artifact study This artifact research was basic to the object named “the hand of sabazius “and analysis this artifact from several aspects such as background‚ material‚ function‚ evidence of use‚ manufacture process. According to a scholar‚ evidence shows that this artifact called the cult of the god sabazius originated from Phrygia and Thrace‚ later it became common within the Roman Empire. Greek and Roman religion were influenced by mystery religions from the east of Roman and this mysterious religious
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Elements classified as Metalloids The 7 elements classified as "Metalloids" are located in Groups 13‚ 14‚ 15‚ 16 and 17 elements of the Periodic Table. Elements classified as Metalloids have properties of both metals and non-metals. Some are semi-conductors and can carry an electrical charge making them useful in calculators and computers The Metalloids are: Boron Silicon Germanium Arsenic Antimony Tellurium Polonium Elements classified as Alkali Metals The 6 elements classified
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aeruginosa was eliminated as the identity of the bacterium when the oxidase test results were negative. An EMB plate of the bacteria was examined to identify whether the bacterium was S. typhi or E. coli. The growth on the EMB plate was shiny and metallic green‚ meaning that it was positive for lactose fermentation. S. typhi exhibits intermediate lactose fermentation with pink or purple growth on an EMB plate‚ so it was eliminated as the possible identity of Bacteria A. To confirm the identity of
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MY SCHOOL‚ MY MISSION FIELD I take pen in hand to write this essay with one motive in mind: that the youth (including me) would regard their school as mission fields. Quite frankly‚ as I ponder where to begin‚ how to start‚ and what words to put‚ discouragement makes an entrance. Words like “I can’t do this”‚ “I’m not in the mood”‚ or “I’m no good at this” try to occupy my mind. On the spur of a moment‚ I begin to realize that those are the same words that try to penetrate my thinking when I’m
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sample of a compound to metallic copper. The reduction of copper ions in a compound to a copper metal is caused by the addition and oxidation of magnesium. The reaction takes place in an aqueous solution of a weighed sample of a copper-containing salt. Magnesium completely displaces copper from the solution allowing for measurements. Hydrochloric acid is then added to dissolve the excess magnesium which also produces hydrogen gas. HCl does not react with copper. The metallic copper can be filtrated
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matte cabinetry with metallic tapware and sinks. Storage and
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Experiment 7: A Study of Chemical Changes: Types of Chemical Reaction INTRODUCTION Chemical changes are results of chemical reactions. All chemical reactions involve a change in substance and a change in energy. They are either chemical elements or compounds. A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products. There are different types of chemical reaction classified into 4 general types‚ namely‚ Synthesis‚ Decomposition
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