formed by chemical reactions. In order to extract the gas I will use several household products such as vinegar‚ baking soda‚ water‚ and hydrogen peroxide in order to create the gases to be tested. Materials: Student Provided 1 Match 1 Toothpicks (or wooden splints) 1 Pie tin or similar 1 Marker pen 1 Household white vinegar 1 3% Hydrogen peroxide (H2O2)
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General Chemistry Laboratory 151 Chemiluminescence Introduction: The objective of tis experiment was to carry out systematic series of experiments in order to determine which chemicals and which ratios of chemicals produce the brightest light. Also‚ this experiment will determine which chemical produces the longest light. Chemiluminescence is the emission of light (luminescence)‚ as the result of a chemical reaction. There may also be limited emission of heat. This occurs because the
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Gas | Flame Reaction | Glowing Splint | Limewater Reaction | Bromothymol Blue Reaction | Hydrogen | Quick burst | N/A | N/A | N/A | Oxygen | N/A | Quick bursts as if trying to re-ignite | N/A | N/A | Hydrogen & Oxygen | I got no reaction for this step | N/A | N/A | N/A | Carbon Dioxide | Put the flame out | N/A | Bubbled slightly and turned cloudy | Bubbled slightly‚ amd turned yellow | Alka Seltzer | N/A | N/A | Bubbles vigorously | N/A | Breath | N/A | N/A | Bubbles vigorously
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V. HAZADOUS WASTE TREATMENT PROCESS Presently‚ the hazardous waste treatment technologies are highly developed from the decade before due to the more environmental and ecosystem concerning. Moreover‚ hazardous waste not threaten only environment but also to human hygiene and health. However‚ one of the most dangerous hazardous waste is dichlorodiphenyltrichloroethane (DDT). Addition‚ DDT is used as a majority pesticide during agriculture revolution period‚ and also uses to regulate Malaria in developing
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Marble chips 5. Cold water 6. Hot water 7. Room temperature water 8. 1M hydrochloric acid (HCl) 9. 3 M HCl 10. Iron (III) chloride (FeCl3) 11. Sodium chloride (NaCl) 12. Calcium chloride (CaCl2 ) 13. Potassium nitrate (KNO3) 14. 0.3% hydrogen peroxide (H2O2) solution 15. 8 test tubes 16. Test tube rack 17. 3 250mL beakers 18. Alka Seltzer tablet 19. 3 pieces of zinc metal Procedure: Particle size 1. Have two test tubes in the test tube rack. Put 1M hydrochloric acid into both of
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Clays are one of the important natural materials‚ which have been examined for catalytic applications. Clays are characterized by a layered structure and hence they are slippery when wet. They are broadly classified as cationic or smectite type (having layer lattice structure in which two-dimensional oxyanions are separated by layers of hydrated cations) and anionic or brucite type (in which the charge on the layer and the gallery ion is reversed complimentary to smectite type). Anionic clays are
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H+(aq) ions by titrimetric analysis. 9 F The hydrogen gas formed in the reaction between zinc and dilute hydrochloric acid CANNOT escape from a closed reaction vessel. Thus‚ the mass of the reaction mixture would NOT decrease as the reaction proceeds. 10 F It is difficult to measure the volume of water produced from the reaction between oxalate ions and permanganate ions in aqueous solution. 1 11 T During the decomposition of hydrogen peroxide solution‚ oxygen gas is formed. 2H2O2(aq) 2H2O(l)
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Tables: Hydrogen Step B: Describe the zinc and acid reaction. As placing a small piece of Zn(mossy zinc) metal into the test tube containing the diluted HCI(Hydrochloric Acid) solution‚ gas bubbles rose from the solution slowly at the beginning and vigorously in process of time. As this reaction continued for a long time‚ transparent solution turned into white opaque color and black precipitates were formed and floated. Step G: Record your observations with the flame and the hydrogen gas. When
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measurement methods‚ and factors influencing the efficacy of the whitening process. Keywords: Tooth colour Tooth whitening Mechanism Measurement Peroxide Aesthetics Sources: ‘‘Medline’’ and ‘‘ISI Web of Science’’ databases from 1966 and 1974‚ respectively were searched electronically with key words tooth‚ teeth‚ colo*r‚ white*‚ bleach* and peroxide. Conclusions: The importance of tooth whitening for patients and consumers has seen a dramatic increase in the number of products and procedures over
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Symbol H+ Li+ Na+ K+ Rb+ Cs+ Be2+ Mg2+ Ca2+ Sr2+ Ba2+ Ra2+ Zn2+ Symbol Cu+ Cu2+ Fe2+ Fe3+ Sn2+ Sn4+ Cr2+ Cr3+ Mn2+ Mn3+ Symbols and Charges for Monoatomic Ions Name Symbol Name hydrogen ion H¯ hydride lithium ion F¯ fluoride Note that the sodium ion Cl¯ chloride letters in an ion’s potassium ion Br¯ bromide name before the rubidium ion I¯ iodide -ide ending is 2¯ cesium ion O oxide the stem. For 2¯ beryllium ion S sulfide example‚ the stem
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