ODD ONE OUT 1. Find the odd one out. A. Ginger B. Garlic C. Chilli D. Potato ANS-C Explanation Chilli is modified stems 2. Find the odd one out A. Eagle B. Hawk C. Bird D. None of these ANS-C Bird is prey of another bird 3. Find the odd one out A. Credit B. Deposit C. Withdrawl D. None of these ANS-C Explanation Credit and deposit indicates addition in amount while withdrawl indicates reduction. 4. Find the odd one out A. Microscope B. Telescope C. Periscope D. Stethoscope ANS-D Explanation The stethoscope
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As ice freezes on the concrete‚ it creates a dangerous‚ slick surface. Driveways‚ sidewalks‚ patios‚ and parking lots covered with ice can cause falls‚ making you liable for injuries. So most people rely on deicers such as salt because it does a great job melting ice‚ but it also damages concrete surfaces over time. How does salt damage concrete surfaces? Salt lowers the pH balance in the concrete. Because it is acidic‚ it weakens the strength of the concrete and increases the sizes of the pores
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Ever wondered how ice skating works? Why the ice is slippery? Or just how to maintain enough balance to speed up? Well this article will explain why. Ice skating works because metal skate blades glide with very little friction over a thin layer of water on the ice surface. At one time‚ scientists thought skaters created the water layer by melting the surface layers of ice through the pressure of their body weight creating a melting point.. However‚ recent studies disproved that explanation and it
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Water has polarity. Polarity is the uneven distribution of charge. Water has cohesion‚ adhesion‚ and heat capacity. Cohesion is the attraction between molecules of the same substances. Adhesion is the force of attraction between molecules of a different substances. Heat capacity is the amount of heat it takes to raise temperature of a substance. The experiment displayed shows water can have adhesion and cohesion. The hypothesis of this experiment is if a nonpolar substance is added to water
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EXPERIMENT 5 SEPARATION OF A MIXTURE INTO ITS COMPONENTS BY FRACTIONAL CRYSTALLIZATION Introduction: Fractional crystallization is one of the experimental techniques used to separate or purify mixture. Fractional crystallization makes use of the differences of solubility to separate the components of a mixture. Goals: Applying fractional crystallization to separate a mixture of salicylic acid and copper sulfate pentahydrate into its components. Calculate the percent of salicylic
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Blubber is the fat on an animal often found in colder climates that keeps its internal body temperature stable. By experimenting with multiple different models of handmade blubber‚ it was discovered that using petroleum jelly‚ tin foil‚ and playdough got the best results. It was originally believed that Crisco would work the best because of its thickness and texture‚ but in reality‚ the temperature went down on average 7.75 degrees Celsius each time which was too much from our original temperature
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After the dialysis tubing soaked in the distilled water overnight‚ the measurements showed that the dialysis tubing increased in mass. The initial weight of the dialysis tubing was 19.08 grams‚ but it went up to 19.34 grams after sitting in the distilled water for some time. The amount of distilled water in the beaker also decreased. There used to be 200 mL of distilled water in the beaker‚ but it decreased to 199 mL after the dialysis tubing soaked in it. The data collected supports the claim that
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Introduction: In this experiment‚ my lab group was given a bottle of unknown liquid‚ that transformed from colorless to blue when the container was shook. We had a wide variety of different experiments that we could’ve preformed‚ but one really stuck out to us. Our group wondered if the amount of liquid had any correspondence to the time it took this unknown liquid (the “system”) to change from colorless to blue‚ which is what this lab is designed to show. So the purpose is to find out whether or
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DISCUSSION: The results obtained based off trials one‚ two‚ and three would support the initial rationale hypothesis that if salt concentration is not equal to the optimum concentration of 0.15M‚ then its ability to function will decrease. 0.15M with the trypsin added had the lowest absorbency compared to the three other concentrated groups that were tested (0.0M‚ 0.075M‚ 0.30M). Closer comparison that if you take the results obtained from trial one with trypsin at a salt concentration of 0.075M
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Question: Will the egg float or sink if put in salt water? Purpose: I want to know why the egg floats in fresh water and not salt water. I want to know if the egg will float in salt water‚ Also this shows why materials float easier in saltwater and sink in freshwater. Research: Since the egg’s density is higher than the density of freshwater the egg will sink. Density is mass per unit volume‚ which means a measure of how much mater is in a certain volume. If you add enough salt the egg will float
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