Science Essays

1. Design 1.1 Defining the problem Research Question Have you ever accidentally cooked a solanum tuberosum (potato) in high sodium chloride (salt) concentrated water? What was the result? This experiment is to consider how salinity influences osmosis in potato cells. By changing the concentration of salt (0%, 0.2%, 0.4%, 0.6%, …

Aim Our aim was to figure out the diversity of the location for each given specie we were given. We found diversity by finding the plant species percent cover, plant population density, plant species, and the percent frequency. Introduction We were given a map with different plant species drawn on …

A cell needs a large surface area in order to carry out metabolic functions (as chemical reactions require a surface). As a cell grows, it needs to carry out more and more reactions. Therefore, since a cell has to maintain a certain surface area to volume ratio, its size is …

What is dissection? For some the procedure has solved some of the mysteries of life, for others it was simply disgusting and cruel. But by definition, dissection is the observing or cutting into a dead animal for the purposes of learning anatomy or physiology. There are also many other questions …

Introduction: Once I was searching on internet on how music affects human mind, but at that time I found something interesting, I found an article saying music affecting the growth of the plant. Then I thought if music can affect human brain then it can be true that it affects …

Aim To determine which of these: diethyl ether, Propionic acid, 1-butanol, and 1-hexanol are most viscous through an evaporation method. Hypothesis Propionic acid is going to be the most vicious because the stronger the intermolecular forces the more viscous. Its molecular formula is C3H602, the C is bonded to an …

Controlled variables – Mass of water – Mass of magnesium sulphate anhydrous – Mass of MgSO4.7H20 Materials 1) Safety spectacles 2) 2 filter papers 3) Spatula 4) Digital balance 5) 2 polystyrene cups 6) Thermometer 7) Magnesium sulphate anhydrous 8) Magnesium sulphate-7- water 9) Distilled water 10) Measuring cylinder Procedure …

Information Used: Specific Heat Capacity of Water = 4.186J/g oC Specific Heat Capacity of NH4Cl = 3.95J/g oC Trial 1: Step 1: Calculate Moles of NH4Cl (Mass / Molar Mass) = (3.50 0.01 / 53.49) = (3.50 0.28% / 53.49) = 0.07 0.0002 moles Step 2: Calculate the enthalpy change …

Aim – To calculate the percentage composition of the mixture of Na2CO3 + NaHCO3 Procedure 1) Weigh a perfectly dry crucible with properly fitted lid. 2) Weigh the crucible with 1 gram of the mixture. 3) Heat the crucible with a partially open lid for 10 minutes with low flame …