1. Provides framework that supports and protects other body tissues 2. Forms a system of rigid levers that can be moved by forces from attaching muscles • Major building blocks of bones 1. calcium carbonate- 60 to 70 percent of dry bone weight 2. Calcium phosphate- 60 to 70 percent of dry bone weight 3. Collagen 4. Water- 25 to 30 percent of bone weight • The building blocks gives stiffness and are determinants of compressive strength • Collagen
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water and oxygen 7. Ammonia combines wuth oxygen to get nitrogen oxide and water 8. Aluminium oxide combines with sodium to form aluminium and sodium oxide 9. Calcium chloride reacts with water to give calcium hydroxide and hydrogen chloride 10. Sodium hydroxide reacts with carbondioxide forming sodium carbonate and water Maths : If you want you can do this or search in google for different methods OBJECTIVE:- To verify the Pythagoras theorem by method of Paper Folding‚ Cutting
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Part II: Decomposition of hydrogen peroxide 1. Write the balanced equation for the breakdown of hydrogen peroxide. 2H2O2 —> 2H2O + O2 2. Write a balanced equation for another decomposition reaction. Decomposition for copper carbonate: CuCO3 → CuO + CO2 Part III: Reaction between zinc and acetic acid 1. Write the balanced equation for the reaction between zinc and acetic acid. Zn(s) + 2CH3COOH(aq) —> Zn(OOCCH3)2(aq) + H2(g) 2. Classify the reaction between
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KNO3(s) + AgI(aq) Potassium iodide has very low risks‚ so there is no worry that this was found in the soil sample. I identified that unknown sample D is calcium chloride. It produced a red flame during the flame test which narrowed it down to be either calcium or lithium. However‚ the sodium hydroxide test supported that it was actually calcium‚ as a white precipitate was formed during this test. The chemical equation for this test is: CaCl2(aq) + NaOH(aq) Ca(OH)2(s) + NaCl(aq) I identified it
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rows A through E: cobalt (II) nitrate‚ copper (II) nitrate‚ iron (III) nitrate‚ barium nitrate‚ and nickel (II) nitrate. Afterward‚ two drops of each of sodium phosphate‚ sodium iodide‚ sodium sulfate‚ sodium chloride‚ sodium bicarbonate‚ sodium carbonate and sodium hydroxide were added to the five vertical wells under columns 1-7. |cobalt(II)nitrate|copper(II)nitrate|iron(III)nitrate|barium nitrate|nickel(II)nitrate| sodium phosphate|Precipitated a purple color|Precipitated a light blue color|Precipitated
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b) scurvy c) anemia d) night blindness 6.Which one of the following is reducing sugar? a) glucose b) maltose c) sucrose d) starch 7.Buildings are being damaged by acid rain because it attacks a) Calcium sulphate b) Calcium nitrate c) Calcium carbonate d) Calcium oxalate 8.Which one of the following salts makes water permanently hard a) Na CO b) NaHCo c) Ca(HCO ) d) CaSO 9.Concentration of the copper one is carried out by a) calcination b) roasting c) froth
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nutritional chemistry red tomatoes raw nutritional value per 100 gm (3.5 oz) contains 20 kcal‚ carbohydrate - 4 gm‚ sugar – 2.6 gm‚ dietary fibre – 1 gm‚ fat – 0.2 gm‚ protein – 1 gm‚ water – 95 gm‚ vitamin C – 13 gm. It also contains minerals like calcium – 48 gm‚ phosphorous 20 –gm‚ iron – 0.4 gm‚ small amount of vitamin B complex. The tomato is essentially an alkaline vegetable‚ its acid taste is due to malic acid which is about 0.5% it also contains 0.52& to 1.81 citric acid and only a trace of
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liquid and gas - diagram) - elements‚ compounds and mixture (3 diff substances given) Ch.5 - the candle in gas jar (experiment) - the charcoal and kerosene burning experiment. - germinating seeds + cockroach (experiment of c.dioxide using hyd. carbonate indicator‚ Ch.6 - energy conversion (diagram - 3 objects : bicycle dynamo) - renewable + non renewable energy Ch.7 - the candle experiment (white + black flask) - sea and land breeze -convection (boiling) - bimetallic strip (diagram)
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Introduction When the water from the rain collects impurities by dissolving the salt that is exist in the soil. These particular salts include ions of sodium‚ magnesium‚ calcium‚ iron‚ and other metals. These particular impurities are what you will see on the glass door of the shower after it has been cleaned. Calcium ions are what cause the majority of water hardness. The water hardness arises from the existence of metal ions with a charge of +2 or higher. Water hardness is reported in
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of Antacid were tested and neutralized with the Hydrochloric acid‚ then the one that would be the most effective antacid would be the TUM’s Ultra Strength Calcium because it is larger and because it is Ultra Strength‚ it should be more effective. Materials • Compliment Extra Strength Antacid Tablet • TUMS • Life Ultra Strength Calcium Antacid Tablet • Goggles • Thymol Blue • Mortar and Pestle • Beakers • pH probe • Clamp • Retort Stand • Pipette-Graduated • Hydrochloric Acid(HCl)
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