Is glass a solid or a liquid "The idea that glass is a fluid is a very widespread myth." (Yvonne Stokes:1999‚Discover Magazine) This myth has survived for centuries because glass is such a confusing matter which cannot be compared to the three ordinary kinds of matter described in our particle theory of matter. Gasses contain free flowing molecules which are much further apart then liquids and gasses which removes the possibility of glass being a gas. A liquid however contains tighter bound molecules
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What is superconductivity? Superconductivity is a phenomenon observed in several metals and ceramic materials. When these materials are cooled to temperatures ranging from near absolute zero (-459 degrees Fahrenheit‚ 0 degrees Kelvin‚ -273 degrees Celsius) to liquid nitrogen temperatures (-321 F‚ 77 K‚ -196 C)‚ they have no electrical resistance. The temperature at which electrical resistance is zero is called the critical temperature (Tc) and varies with the individual material. For practical
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temperature on reaction rate constant and also to study the effect of the reaction rate constant in a batch stirred tank reactor its important in chemical industry because it is used to determine the effect of temperature on reaction rate constant; it is also used in chemical and process industry for solids dissolution‚ product mixing‚ chemical reaction‚ batch distillation‚ crystallization‚ and polymerization. It is also used in the laboratories in obtaining design‚ interpretation of rate of reaction and
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specific conditions to function‚ thriving at temperatures between 29°C-40°C‚ with an optimal temperature of 37 °C. Above 37°C‚ rennin molecules increase in energy causing the rate of reaction to increase‚ becoming denatured at approximately 60°C. Below 37°C‚ the reduced energy level results in fewer collisions and the rate of reaction and activity of rennin decreases. (7) The optimum pH for rennin is pH 3.4 (8) as it mimics the gastric juices and acidic conditions of the stomach‚ however again rennin
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2013 Some Factors that Affect the Rate of a Reaction BACKGROUND: Chemical reactions occur at different rates. In this experiment I will consider some of the key factors that influence the rate of a reaction: * nature of reactants - particle size * temperature * catalysts According to the collision theory‚ the rate of a reaction depends on the frequency of collisions between reacting particles. The more frequent the collisions‚ the faster the rate of the reaction. However
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What are the different text types? There are four kinds of text types: Descriptive‚ Informative‚ Instructive‚ and Persuasive texts. Descriptive Text * A descriptive text is a text that wants you to picture what is being described. * Descriptive texts usually make use of adjectives and adverbs; use comparisons to help picture the scene (something is "like" something else); employ the reader’s five senses (how something feels‚ looks‚ smells‚ sounds‚ and tastes). Informative texts
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What causes High Crime Rate? Westwood College (Criminology) Week 2 Assignment What causes High Crime Rate? Crime rate is where the Federal Burro of Investigations use the number of crimes reported to the burro to measure the crime rate of certain locations as well as the type of crimes. When researching two cities there are two different ways to research the crime there is qualitative and quantitative; these two sound similar but there are some differences. Qualitative has details with descriptions
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In the experiment‚ the effect of light intensity on the rate of photosynthesis will be tested. Photosynthesis is the process in which autotrophic plants create their own food (energy) from sunlight. Photosynthesis involves three ‘ingredients’ or reactants‚ carbon dioxide‚ water‚ and light energy (sunlight). Carbon dioxide and sunlight come in through a leaf’s stomata which are tiny holes‚ and water is absorbed through their roots. When all of these reactants are combined in a plant’s chloroplasts
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production of the most amount of oxygen. The furthest light from the plant led to the least amount of oxygen produced for the three different distances. These results show how the rate of photosynthesis and the by-product produced is increased as the intensity of light is increased. The second part of the experiment reveals that the color of light also has an effect of the rate of photosynthesis. The red light resulted in the greatest amount of oxygen produced and the blue was not too far behind. Green
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Unit 331 5.1&5.2 Explain the different types of transitions can affect children’s development and evaluate the effectiveness of positive relationships during periods of transitions. Transitions are the movement or changes from one position‚ stage or state to another. These changes can be gradual or sudden‚ and last for differing periods of time. Transitions can be stressful for young people and this stress can have far reaching effects on children’s emotional wellbeing and academic
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