Today, a safer method of making dynamite (and also more common) is combining nitroglycerin, nitrocellulose (a highly flammable material that is made by treating cellulose with nitric acid) and ketone. The chemical equation for nitroglycerin is C3H5(ONO2)3. Dynamite can be made with other products (such as ammonium) but this is less common and can be more dangerous. The overall main explosive reactant within dynamite is the nitroglycerin. When dynamite explodes, it causes an exothermic reaction.
Antiseptic One of the first antiseptics to go into wide use, phenol has been largely replaced by safer chemicals; but it continues to be used for this purpose. It inhibits microbe growth in the irritations to which it is applied. Topical Anesthetic Phenol numbs skin on contact, making it an effective topical anesthetic and analgesic. It is often included in sore throat sprays and preparations applied to soothe rashes and minor skin irritation. Chloraseptic throat spray and cough drops contain phenol as their active ingredient.
Powdered horn of a Bicorn also plays an important role in neutralizing the acidic effects of the Polyjuice Potion. The acidic nature of the Polyjuice Potion may cause the consumer to have a bad stomachache, or induces serious vomiting. Boomslang skin is extremely valuable, but its magical properties makes it suitable to be added to the Potion. The skin would ensure that the transformation of the consumer is only a temporary state. Polyjuice Potion however, cannot be used on humans to take the form of animals.
Due to their low ionization energy, these metals have low melting points and are highly reactive. The reactivity of this family increases as you move down the table. Alkali metals are noted for how vigorously they react with water. Due to this, they are often stored in mineral oil and are not found in their elemental forms in nature. These characteristics can be explained by examining the electronic structure of each element in this group.
| 3 drops of 1% dimethylglyoxime solution. | [Ni(NH3)6]2+ + 2H2DMG→ Ni(HDMG)2 + 2NH4+ + 4NH3 | 9 Al3+ | By heating the solution in the hot water bath. | A black gelatinous precipitate was changed to colorless. | 6M NH3 | [Al(OH)4]- + 4H+ → Al3+ + 4H2O | 10 | Centrifuge the solution. | Colorless solution.
When in flame it produces gas rapidly and bubbles. Liquid turns into gas quickly. When liquid disappears solution (now a solid) turns white | 4 | A Initial temperature is 15 degrees Celsius and the final temperature is 17 degrees Celsius. BThe blue hydrated copper sulphate turned white, evidence of condensation of a clear liquid present on the inside of the test tube.C concentrated sulphuric acid turns black on paper towel and is clear on the white cottonD Carbon pillar grows cause of air bubbles, it is brittle, it is both corrosive with a hole and there is evidence of carbon produced | 5 | No temperature change and iodine brown/yellow gas produced | Properties of Sulphuric acid results table Aim: To investigate and observe the properties of sulphuric acid through five different experiments where we will determine its extent of ionisation in aqueous solution, reaction of sulfate ions, action as a strong acid, affinity for water and action as an oxidising agent. Background: Sulfuric acid (H2SO4) is a diprotic acid (can donate 2 protons to a base).
o A group is a column, and contains elements with similar properties. B: The alkali metals • The alkali metals are reactive metals found in group one of the periodic table that react with water to form alkaline solutions. • Properties of alkali metals: o Can be cut with a knife o Shiny, but tarnish quickly with air, because a layer of oxide is formed o Good conductors of electricity o Float o Low melting point • Reactions of alkali metals: o Lithium + water ( lithium hydroxide + hydrogen o Squeaky pop test with burning splint for hydrogen o Lithium + chlorine ( lithium chloride o Chlorides are salts that are colourless, crystalline and dissolve in water • There are trends in the properties of the alkali metals: o Physical trends are trends such as melting point and density o Chemical trends are trends such as reactivity o Alkali metals get more reactive as you get further down the group • Compounds of alkali metals are different from the elements, and can be important for our daily lives, for example sodium chloride (salt). C: Chemical equations • During a chemical change, there is no change in
Formal Lab Report Standardization of KMnO4 Abstract: Potassium permanganate, KMnO4, is a strong oxidizing agent. Permanganate, MnO4, is an intense dark purple color. Reduction of purple permanganate ion to the colorless Mn2+ ion, the solution will turn from dark purple to a faint pink color at the equivalence point. No additional indicator is needed for this titration. The reduction of permanganate requires strong acidic conditions.
The Orange Juice which was predicted to have the lowest loss of Vitamin C had a difference of 15.64mg/100ml which was less than the other squeezed juices. This proves that Orange Juice as a citrus has a stronger preservation over other fruits. Introduction Vitamin C, also known as L-ascorbic acid (derived from the Latin input of ‘a’ meaning no and ‘scorbutus’ meaning scurvy), is an essential antioxidant for human nutrition. Vitamin C transfers its own electrons to other molecules to prevent the production of free radicals. Radicals are capable of chemical reactions with our nucleic acids, proteins and lipids which could create a chain reaction which would damage cell.
Manufacturers of soft drink commonly used benzoic acid or sodium benzoate as food preservatives. Non diet soft drinks lack aspartame, a sugar substitute used in diet soft drinks. Benzoic acid is converted into its salt sodium benzoate through neutralization with sodium hydroxide. Sodium benzoate is rather used than benzoic acid as anti-microbial agent in food and beverages because of the solubility effect. Sodium benzoate is approximately 200 times more soluble than benzoic acid.