Boric acid

Slime is a very unique toy that is very fun to play with. It is also very popular because it is satisfying and relaxing. You also might know this a silly putty or goo. It is unique because it has properties of both a liquid and a solid. The Science The science behind this slime is awesome! A unique polymer, this slime is made mostly out of glue. Because of the glue’s long and flexible molecules, the slime has properties of both a liquid and a solid. A borate ion is formed by mixing borax in water. When the borax solution is mixed into the glue molecules, the borate ions hook to the glue to form a slow-moving polymer. When the right amount of polymers attach, the mixture becomes a fun substance to play with which is called slime. Now, why does glue work. Glue, is also known as polyvinyl alcohol. Many people call polyvinyl alcohol PVA. Known as the slime activator, sodium tetraborate activates the PVA in the glue to make slime. Slime is scientifically known as a Non-newtonian fluid. With slime, the more force you apply when mixing, the stronger and stretchier the end result is. A very common example is cornstarch mixed in water also known as oobleck. Non-newtonian fluids have incredibly interesting properties. The act of punching a non-newtonian fluid such as cornstarch in water will surprise you greatly. The force of your hand will make the atoms rearrange in the solution which results in the fluid to behave like a…

enzyme, while the other control test tube had 1.5mL buffer and 0.5 mL. Each of the three test tubes had sat in the water bath for twenty minutes while checking on them for every five minutes to be able to observe any color changes. For the temperature experiment, we did two test tube one hot and one for cold, both had 14mL of a buffer, 0.5 mL of the substrate, and 0.1 mL of the enzyme. Each was sat for twenty minutes checking every five minutes for a color change. The only different in this…

First of all, weigh 1.0 g of sample accurately in 250 mL digestion tubes by using analytical balance. After adding 1 tablet of Kjeltabs catalyst Cu 3.5 into the tube, add 12 mL of concentrated sulfuric acid, H2SO4 with caution, and shake the tube gently to moisten the sample with the appropriate acid. Connect the Exhaust system with the tubes which has been placed on the rack and ensure the aspirator system to start functioning. The rack and Exhaust system are locked to heaters block digester…

Samples were grinded to powder and passed through 0.5mm sieve. Sample were defatted and crude protein was estimated (Awan & Rahman, 2006) to determine the sample quantity taken for amino acid analysis. Diluted hydrochloric acid was used for Free amino extraction. Nitrogenous macromolecules that were co-extracted were precipitated using sulfosalicylic acid and removed by filtration. A mixture of performic acid and phenol was used for Oxidation at 0°C. Hydrolysates of the sample were then adjusted…

A reaction mixture containing 0.5172g of boric oxide and 1.0167g of acetylacetone was prepared and mixed in a 10 mL beaker. The reaction mixture was heated with occasional stirring for 10 minutes. Next, another mixture containing 1.3321g tributyl borate, 3.0005g of vanillin and 15ml of ethyl acetate was prepared in a 50 mL conical flask. The mixture was mixed and a magnetic stirrer was added to the mixture. The mixture was then stirred on a hot plate for 5 minutes at room temperature. After…

oxygen3. Serratia Marcescens is a gram negative bacterium. Gram negative bacteria have a thin cell of a single layer of peptidoglycan that is enclosed by an outer membrane. The outer membrane is surrounded by special phospholipids composed of fatty acids called lipopolysaccharides that are attached to a glucosamine…

neutralization reaction. A neutralization reaction is a chemical reaction in which an acid and a base react to form an ionic compound (a salt) and water; the resulting pH is closer to 7. The general chemical equation for a neutralization reaction is: Acid + Base Water + Ionic Compound This can also be considered as a double displacement reaction. However, since the reacts are an acid (carbonic acid) and a base (sodium hydroxide) and the products are a salt (sodium carbonate) and water (H2O),…

than anything else. It is important to take care of the body from any harm. One thing that the body is capable of is maintaining pH levels and buffers. A pH is the power of hydrogen and buffers prevent extreme shifts in pH. The blood has a specific type of buffer that is maintained at pH level of 7.4. If the buffers shifts and levels of pH go to 7 or 7.8, it can be deadly. The blood buffer contains carbonic acid which dissociates into bicarbonate acid and hydrogen ions. This equation can also be…

Bronsted-Lowry Theory, is defined as a proton (H+) donor. An equation exemplifying an acid dissolving in water is: HCl (g) H2O H+ (aq) + Cl- (aq) A base, based on the Bronsted-Lowry Theory, is defined as a proton (H+) acceptor. An equation exemplifying a base dissolving in water: NaOH (s) H2O Na+ (aq) + OH- (aq) Molarity, also known as the concentration, is represented as moles of the measured substance divided by the volume in dm3. It is a value of the amount of substance in a…

INTRODUCTION : The concept of dentin adhesion presently used involves the nanomechanical retention which is due to polymerisation of hydrophilic monomers around acid exposed collagen fibres.1 The entanglement of these monomers within the exposed collagen fibres gives rise to the so called Hybrid layer , which is also referred as Resin infiltrated Dentin layer.2 The presence of hybrid layer is important for attainment of a leakage free interface between the cavity walls and resin composite.2…