INTRODUCTION AND BACKGROUND THEORY When electrons travel through wires or other external circuits, they travel in a zigzag pattern that results in a collision between the electrons and the ions in the conductor, and this is known as resistance. The resistance of a wire causes difficulty for the flow of the electrical current of a…
1.0 Background: A breakthrough scientific experiment conducted by ‘Carnegie Science’ found that soil salinity considerably affects the growth rate in plants. The experiment found how plants create Abscisic Acid as a stress hormone when the endodermis is exposed to drought or saline environments. “The endodermis also acts as a guard, with Abscisic Acid, to prevent…
Introduction: Our group had done 3 data sets for the same experiment process, and had recorded 3 groups of data. The aim of experiments was to determine the percentage of water in hydrated Ca(NO3)2. We obtained the percentages through experimental procedures of reacting Ca(NO3)2 with Na2CO3 , filtrating and drying CaCO3. The chemical equation of…
Purpose: To predict products of five reaction types and perform them HypothesisStation 1: Mg+ O2 -> 2MgOStation 2: NaHCO3 -> Na2CO3 + H2OStation 3: Pb(NO3)2 + KI -> PbI2 + KNO3Station 4: CH3OH + O2 -> CO2+ H2OStation 5: CuCl2 + Al -> AlCl2 + Cu Data Station 1 Station 2 Station 3 Station 4 Station 5 Mg before(2cm)=0.038g…
Research question: All organisms have activities, organisms use energy to accomplish activates. Organisms eat food to gain energy, this energy is stored for later use. Since humans are organisms we eat food to gain energy. Which food of the same category gives us more energy? Hypothesis: Since fat is the main reserve that is burnt…