Julia Supangan blk. 2-4 The Reaction of Various Metals with Ionic Salts Purpose: To examine the reaction of various metals with ionic salts Materials: * 4 test tubes * test tube racks * 10mL measuring cylinder * 4 metals (in containers)- Zn‚ Sn‚ Mg‚ Fe * copper (II) sulphate solution Safety: 1. Be careful with copper (II) sulphate solution it is poisonous and corrosive. handle with care 2. Do NOT BREATH in any gases produced 3. If you touch any of the
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catalytic materials‚ precision ceramic material‚ laser materials‚ superconducting materials‚ magnetostrictive material‚ magnetic cooling material‚ magnetic optical storage material‚ optical fiber materials‚ etc. Separation is often used for rare-earth ore processing. The different density of rare earth minerals and gangue minerals is used to do separation. Commonly used gravity separation equipments are: cone concentrating machine‚ spiral concentration machine‚ shaking table‚ etc. High efficiency concentrating
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CHEMICAL WEATHERING Chemical weathering is a process of alteration of rocks of the Earth’s crust. is a chemical decomposition process. is brought out by atmospheric gases and moisture. End product has a different chemical composition and poorer physical constitution. The process: Chemical change in the nature of rock takes place in the presence of moisture containing many active gases such as CO2‚ N2‚ H2‚ and O2. Rocks are made up of minerals. All the minerals in a rock are not in
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leaves and loss of fruiting bodies Copper (Cu) Dieback of stems and twigs‚ yellowing of leaves‚ stunted growth and pale green leaves that wither easily. Iron (Fe) Interveinal tissues in young leaves started to green followed by complete yellowing to almost white‚ and then browning. Manganese Interveinal chlorosis but not as (Mn) distinct as in iron deficiency followed by brown necrotic spots delayed maturity and white/gray spots on some cereal crops. Molybdenum General yellowing at older leaves (Mo)
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Materials Final Review (TESTS I‚ II‚ & III) Part I : Multiple Choice 1) As the temperature of a polymer increases‚ its density a. Increases b. Decreases c. Remains fairly constant 2) Which one of the three polymer types does not involve cross-linking: a. Elastomers b. Thermoplastics c. Thermosets 3) Degree of polymerization is which of the following: a. Average number of mers in the molecule chain b. Proportion of the monomer that has been polymerized c. Sum of the molecule weights of the
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All-State University has established nutritional requirements that each main dish of the cafeteria must meet. Specifically‚ the total amount of the dish prepared for all the students for one meal must contain 180 grams (g) of protein‚ 80 milligrams (mg) of iron‚ and 1‚050 mg of vitamin C. (There are 453.6 g in 1 lb and 1‚000 mg in 1 g.) For simplicity when planning‚ Maria assumes that only the potatoes and green beans contribute to the nutritional content of the casserole. Because Maria works at a
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Introduction Deficiencies in three micronutrients — iodine‚ iron‚ and vitamin A — are widespread affecting more than a third of the world ’s population. Individuals and families suffer serious consequences including learning disabilities‚ impaired work capacity‚ illness‚ and death. They could waste as much as 5% of gross domestic product (GDP). India ’s life expectancy has more than doubled‚ and infant mortality‚ halved in the last fifty years. India is knocking the door for a permanent position
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CAWANGAN PULAU PINANG SKEMA JAWAPAN MODUL LATIHAN BERFOKUS SPM 2013 KIMIA KERTAS 1 454111 www. myschoolch ild ren .com ::‚ Muat turun (percuma) soalan lain di : www.myschoolchildren.com Muat turun (percuma) skema lain di www.myschoolchildren.com MAJLIS PENGETUA SEKOLAH MALAYSIA 1 1 B 11 D 21 B 31 C 41 A 2 D 12 B 22 A 32 A 42 A 3 D 13 D 23 D 33 B 43 D 4 A 14 B 24 C
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TDA 2.14 SUPPORT CHILDREN AND YOUNG PEOPLE AT MEAL OR SNACK TIME 1.1 Outline the nutritional requirements of a healthy diet for children and young people. Energy enables children to concentrate‚ learn and play at school. Starchy carbohydrates should provide the main source of energy in the diet. Sources of carbohydrates are Breads of all types‚ rice‚ pasta‚ noodles‚ potatoes‚ yam‚ oats‚ cassava‚ couscous‚ breakfast cereals‚ wheat grains like bulgar wheat‚ lentils‚ red kidney beans and black eyed
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The result of this study showed that bee bread extract has a protective effect in aluminum induced anemia and it significantly ameliorates hepato-renal toxicity and reduces the elevated CRP level and monocytes and leukocytes counts encountered after aluminum exposure. Aluminum alone caused significant anemia‚ elevation of BUN‚ CRP‚ leukocytes and monocytes counts and liver enzymes‚ ALT and AST‚ and deceased creatinine clearance. Chemical analysis and antioxidant study showed that it contains fat
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