lab is to determine the pH level of common household products. Introduction Liquids are either acidic‚ basic‚ or neutral. We are able to figure out which one it is based on properties‚ along with the pH. Acids taste sour‚ and bases taste bitter. Using the pH scale‚ you are able to know how strong of an acid or base a liquid is. High concentration of [H+] ions means that the liquid has a low pH. Therefore a liquid with a low concentration of [H+] would have a high pH. A pH of less than 7 represents
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as an aqueous solution. The chemical formula for hydrogen peroxide is H₂O₂ which means there are two hydrogen atoms and two oxygen atoms in the compound(Liebeskind‚ 2013). Seed germination is simply the process in which a seedling sprouts from a seed and begins it’s growth. The most important factors for seed germination is the temperature‚ the presence of oxygen and the exposure to water. For a seed to germinate‚ the temperature must be between 60 and 75 degrees fahrenheit. Oxygen and water must
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The Effect of pH on a Food Preservative September 18‚ 2012 Objective: To study the affect of pH on a food preservative. Chemical Equation: C6H5COONa + HCL ------ C6H5COOH + NaCl Procedure: This experiment was started with a clear solution of sodium benzoate and HCl was added to it‚ ultimately producing benzoic acid. First‚ .3395 g of sodium benzoate was weighed‚ then it was dissolved in water‚ causing it to disassociate into ions. Next‚ 3M of HCl were added drop wise to the solution
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Effect of seed germination Purpose: To see the effect of an acid introduced during seed germination‚ on the length of the plant roots. Also shows how salt can affect the seed germination. Acid can be introduced to seeds during germination if there is acid rain. Knowing the results of acid rain on seed germination will help us understand how to grow pants better‚ and how to have more successful germination. Salt can be introduced into a seed during germination because salt is put on roads and the
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Lettuce Seed Germination Introduction In the environment‚ plants are critically affected by the composition of soil‚ as they acquire all nutrients from it. A nutrient must be soluble and must remain soluble long enough in order to travel into the roots of the plant (Kissel and Miller‚ 2008). Soil PH directly affects the life and growth of a plant‚ since it affects the availability of the nutrients needed for plant life. Most nutrients are in their most available state within a PH of 6.0 – 6
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THE EFFECTS OF LIGHT AND GIBBERELLIN ON LACTUCA SATIVA L. GERMINATION Introduction The time that a seed germinates‚ and whether or not it actually does germinate‚ depends on many factors. These factors include; the chemical environment‚ which must be the right conditions; oxygen must be present‚ and inhibitory chemicals must not be present. Germination also depends on the physical environment. Temperatures must be suited to the seed‚ and light quality and quantity must also be suited to the needs
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three main parts of a seed: an embryo‚ nutrients for the embryo‚ and a seed coat (Seed‚ 2009). The embryo is the true essential of the seed. It contains the one cotyledon‚ or plant leaf‚ which under the right conditions will spark the initial seed germination (Seed‚ 2009). The nutrients for the embryo surround it. These nutrients are stored in endosperm. Endosperm has a heavier concentration in oil‚ starch‚ and proteins (Seed‚ 2009). These nutrients are used through the seeds dormancy to survive. By
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Title : THE EFFECT OF PH ON THE ACTIVITY OF CATALASE Aim : To study the effect of pH on the activity of catalase. Introduction : Catalase‚ an enzyme found in many different tissues‚ catalyses the breakdown of hydrogen peroxide into water and oxygen. 2 H202 → 2H20 + O2 Hydrogen peroxide is a toxic substance that can be formed during aerobic respiration and catalase removes this product. The activity of catalase can be measured by finding the rate of oxygen release from hydrogen peroxide
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The Effects of Temperature on Basil Germination Abstract: Successful germination depends on many different factors. The amount of moisture‚ the type of seed‚ the temperature of the room‚ and how long the seeds are left in the specific environment‚ these factors are the most common. This paper focuses on the temperature of the seeds‚ specifically basil seeds. Basil seeds were placed on a damp towel‚ in two seperate Petri dish‚ and one was put in a room‚ to adjust to the temperature‚ and the
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Research Question: Effects of pH on amylase activity Introduction: Amylase is an enzyme that is in human’s saliva as well as the pancreas. Enzymes are biological catalysts that speed up a chemical reaction. They break down complex molecules into simple ones. In this case‚ amylase converts starches (complex molecule) into simple sugars. That is why foods like potatoes for example‚ may taste sweet to us‚ because they contain starch. The optimum pH for pancreatic amylase is the pH of 7. In the
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