Abstract: Water potential is the measure of free energy of water in a solution. The purpose of this lab was to find the water potential of a potato cell. The problem of this lab was‚ if there was a high molarity of solute‚ would it have a positive or negative water potential? The hypothesis of the experiment was‚ if there is a high molarity of solute then the water potential would be lower or negative. After obtaining potatoes‚ we cut them into pieces‚ weighed them‚ and then placed them in a solution
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The Importance of Drinking Water It sounds so simple. H20 - two parts hydrogen and one part oxygen. This substance is also known as water. Water is important to the mechanics of the human body. Water in the human body represent approximately 50-60% of body weight in adults and 75% of the body of a newborn. The three points that we will look at are: 1. What do we need water for? 2.How much water do we need to drink? 3.What happens if we do not drink enough water? Transition: First‚ you will
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The Right to Access Clean Water Only 2% of earth’s water is available for human consumption because 98% of the earth’s water is frozen in ice caps‚ flowing in the ocean‚ and even in animal bodies‚ etc. More than a billion people have no decent water supply‚ adding to that about 2.4 billion people do not have proper sanitation; therefore more than 60% of global illness is linked to the lack of healthy water. Water is a natural source of nature and access to clean water should not be used as a traded
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Interesting and Useful Water Facts | | 1. Roughly 70 percent of an adult’s body is made up of water. 2. At birth‚ water accounts for approximately 80 percent of an infant’s body weight. 3. A healthy person can drink about three gallons (48 cups) of water per day. 4. Drinking too much water too quickly can lead to water intoxication. Water intoxication occurs when water dilutes the sodium level in the bloodstream and causes an imbalance of water in the brain. 5. Water intoxication is
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The Biological Structure of Water Water is a substance with the chemical formula H2O: one molecule of water has two hydrogen atoms covalently bonded to a single oxygen atom. Its structure enables it to carry out many important functions in the body. Water molecules are charged‚ with the oxygen atom being slightly negative and the hydrogen atoms being slightly positive. These opposite charges attract each other‚ forming hydrogen bonds. These are weak‚ long distance bonds that are very common and
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Assignment: WATER POLLUTION 1) What is water pollution? 2) What causes water pollution? 3) Name the 2 sources of pollution 4) What are the different types of water pollution? 5) How can water pollution be prevented? 6) Pollution can be: MICROBIOLOGICAL‚ CHEMICAL‚ SUSPENDED MATTER‚ NUTRIENTS‚ OXYGEN-DEPLETING SUBSTANCES. Give one real example for each cse with a brief explanation. 1) 1- Water pollution is the contamination of water bodies‚ very
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Salt and the effect it has on water. Do you like salt? Do you put it on your food to make it taste better? Salt doesn’t just make food taste better; it can change the freezing and boiling point of water. I bet you didn’t know that! There’s a reason for that‚ but I’ll explain that a little later. First‚ let’s find out if salt can actually change the freezing and boiling point of water. To do so‚ we need to do an experiment. Now‚ if you’re going to do an experiment‚ you’re going to need a hypothesis
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Water is a chemical compound with the chemical formula H 2O. A water molecule contains one oxygen and two hydrogen atoms that are connected by covalent bonds. Water is a liquid at standard ambient temperature and pressure‚ but it often co-exists on Earth with its solid state‚ ice‚ and gaseous state‚ steam (water vapor). Water covers 71% of the Earth’s surface‚ and is vital for all known forms of life.[2] On Earth‚ 96.5% of the planet’s water is found in seas and oceans‚ 1.7% in groundwater‚
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Purpose: How will salt and plain water affect plant cells? Hypothesis Clear water: If you place carrots and celery in plain water they will become flaccid and then eventually start to loose its colour and pieces of the celery or carrots will fall off. I know this because the vegetables will continue absorbing water putting the vegetable in a hypotonic solution. Pieces of the vegetable could break off because the cells are not getting what they need. The cells need to create glucose and oxygen
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Water Quality Water Quality Criteria are levels of individual pollutants or water quality characteristics‚ or descriptions of conditions of a body of water that‚ if met‚ will generally protect the designated use of the water. For a given DU‚ there are likely to be a number of criteria dealing with different types of conditions‚ as well as levels of specific chemicals... Water quality criteria must be fit the use of water. Only scientific considerations are taken into consideration when determining
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