High School Biology Lesson Plan – Properties of Water

chassisHailey griffon vulture Lesson Plan TitleProperties of pee stray Level 10 Content argonnaBiology I cheer arouse Standards or Common Core StandardsSunshine State Standards SC. 912. L. 18. 12 Discuss the spargon properties of irrigate that contribute to Earths suit susceptibility as an environment for life cohesive behavior, ability to moderate temperature, expansion upon freezing, and versatility as a solvent. Behavior Objectives(Three parts Condition, action, and measurement)Given a manakin of a piss supply supply jot, savants impart list the group O and heat content atoms, the partial derivative domineering and negative aras of the molecule, and covalent bonds inside the molecule. The scholar leave correctly identify the 4 main properties of bole of pissing and give exemplifications of individually within 1 minute. Materials (including technology)Students Textbook, Pencil/Pen, PaperTeacher schoolroom board, markers, computer, Power quest presen tation, Word processor, multiple copies of browsesheets to give back out, unassai research l sufficient up 10 -15 Pennies, 10-15 Eye Droppers, Cups, urine Mini Labs p exitic petri dishes, composition c sasss, grain alcohol, pissing in eye debarkpers, glass slides, urine, carmine food colour in, capillary tubes, straws, frappe city blocks, NaCl, salad c everyplace in eye cut outpers, hot abodesClosure Koosh varietyal Hook/Anticipatory Set/ tipTotal Time 15- 20 transactionsPrior to menage, the instructor should gather the interest(a) supplies Pennies, Eye droppers, Cups, weewee.As students come into divide, they should form groups of 3-4 mess and pick up a cardinal cent, one dropper, a small cupful of pee and return to their seats. They give in any case need a pencil/pen. one time every group has the proper materials, the instructor yield hand out the sequential worksheet ( addition A). They should rationalize that each group is release to count how many a(prenominal) drops of pee give suit onto the top of a penny. The pol methamphetamine squad with the most drops of pee on their penny wins. As one student is drop the body of body of pissing onto the penny, a nonher should be computation and recording the results.The different members of the group should be working on the worksheet, consulting their textbook for answers this worksheet idler be wind upd at stead and is non to be turn in. mental processs chew the fat 25 minutesWorksheet Remaining class timeMini science labs twenty-four hours 2, 45 minutes. After the Penny Lab, the teacher should transition into a Powerpoint lecture on the properties of irrigate (Powerpoint attached to lesson plan). The lecture should last for 25 minutes, teeming time to line in the necessary information however short enough to hold students attention.The following topics should be coe cherry-red in the Powerpoint the personal structure of a weewee molecule, states of matter, sign of the zodiac, aquaphobic/hydrophilic substances, tall heat capacity, viscidity/adhesion and dig up tensity, density and solubility. once lecture is over, students get out receive the Properties of urine system worksheet (Appendix B) to work on during the rest of class and to complete as homework if not finished. This assignment will be out-of-pocket the following class period at the end of class and will be graded. The following class period, the teacher will set up the class into 6 centers.Each center is a mini lab and will focus on a certain space of urine, the students should be able to use the fill outledge they gained from the previous lesson to in effect answer questions slightly the properties of irrigate. Each blank space will give a adept worksheet (Appendix C) listing the procedure for the lab and 3-4 questions about the lab and retention covered. Students must issue their own constitution and copy crush the questions and then(prenomi nal) respond they merchantman work unneurotic but must choose their own answers. The work completed during lab time will be glowering in a graded on the solar day of the test. minutes forward class is over, the instructor should moot out a study guide and let students know that there will be a test the next class period, topics from both(prenominal) lecture and lab will be covered. Guided and Independent Pract glass On day 1, students will work together on the penny lab, and during lecture, students should be paid attention to the teacher. Finally, once the worksheet is handed out, students should be working singly. On day 2, students will be working in groups, rotating surrounded by centers the teacher should be walking or so class helping students when needed.On day 3 students will be working independently on the test. Adaptations for ELL &038 east southeast studentsELL students will bear the opportunity to work with partners to receive confederate support and help with complex concepts. duplicate tutoring is available during lunch and afterschool. Vocabulary lists argon available for pick up students atomic number 18 encouraged to create flash tease to help them learn new diction words. ELL students will also be tending(p) extended time to channel tests. ESE students will be given duplication time to complete assignments and complete tests.Complex directions will be clarified so the student is confident in what he/she is mantic to be doing. Students will be allowed to take short breaks during class and tests. Closure performance Whip Around Students quickly and verbally shargon one thing they lettered in the class during the lesson. Students will pass around a koosh ball (or homogeneous item) and whoever has the ball must give a short description of something they set about learned. This could allow topics from lecture, lab, or homework and could be an raise fact, definition or short rendering of a concept.The teacher should be the premiere participant and will give an precedent of a good response, for slip immediately I learned that solid water, or applesauce, forms a lattice structure which causes it to be less laborious than liquid water, which makes it tout. This bodily function will end once everyone has divided their thoughts. If there is ample time and enough willing participants, this activity could also be used for students to gain tautological quote points. Students who wanted to talk about supernumerary concepts could earn up to 2 points extra credit towards their test.The previous days assignment should be collected. Assessment/ paygradeOn the start of the day 3, students will come into class and prepare for their exam. erstwhile everyone is seated quietly the instructor should pass out the test in which students have approximately 40 minutes to complete (ESE and ELL students have more time). erst a student completes the test he/she should record quietly or work on other cl asswork. The lab assignment from day 2 should also be turned in for grading. Appendix A Properties of Water Penny LabTake a Guess How many drops of water do you think will fit onto a penny? __________ coherence, adhesion, and get along tensity are attractive pounds among molecules and very important properties of water. Cohesion is the ability of water to pin to itself it is a result of intramolecular forces (intra- inside, so this is adhesion within the molecule). An example of gluiness is when you over fill a glass with water, the liquid onward motions higher up the rim of the glass but does not fall off the side instead it pass offs up, which is also caused by step forward tension.Surface tension is a special character of cohesion it can be depict as the skin on top of water, in the case of the overfill glass, the surface tension caused the water to stick together and form the bubble over the rim, this property also allows some bugs to walk on water. Adhesion descr ibes water sticking to other materials and is an intermolecular force ( betwixt next molecules). Adhesion can be observed in the stem of a vascular plant water molecules stick to the xylem tissue and climb up the plant. These properties advance because water is a polar molecule.A molecule of water is composed of 2 total heat atoms and 1 oxygen atom, because of the coitusship divided amongst these atoms, one side beat slightly more positive and the other slightly more negative. These partial charges are symbolized by the Greek letter delta, or ?. The polarity of water molecules allows water to fire polar and charged substances, making water a good solvent. Molecules that are uncharged, such(prenominal) as fats and embrocates, usually do not brush off in water and are called aquaphobic. cognitive process 1. Place a modify penny on a directly surface. 2.With the eye dropper, drip one drop of water onto the surface of the penny, one drop at a time. Have one student in your group hold the line track of the number of drops. 3. expose the surface of the penny as the water builds up. 4. Once ANY amount of water has spilled over the edge of the penny record your final exam count of water drops. 5. Clean up your area and return materials to your teacher. Final cypher How many water droplets really fit onto the penny? ___________ Class Average ___________ musing apologize your results in terms of cohesion and surface tension.What do you think would take a chance if we added soap, a hydrophobic substance, to the water before dropping it onto the penny? condone your answer. perplex a picture of a water molecule in your book, copy the draft copy and label the following oxygen molecule, hydrogen molecules, ? +, ? -, and draw the intramolecular bonds between the oxygen and hydrogen atoms. Appendix B Properties of Water 1. a. sire the structure of water. Include the partial charges of each atom. b. why is water considered to be a polar molecule? 2. a. W hat enables neighboring water molecules to hydrogen-bond to one other? b.How many hydrogen bonds can each water molecule form? 3. a. Explain the contrast between adhesion and cohesion. Give an example of each. b. How do adhesion and cohesion explain capillary action? 4. What is surface tension? Give an example. 5. a. What is specific heat? b. Explain wherefore water has such a high specific heat. c. Explain why it is cooler by the lake (or any body of water) in the summer and warmer by the lake in the winter. 6. a. Explain why ice is less dense as a solid than as a liquid. 7. a. wherefore is water called the universal solvent? What does polarity have to do with this? . How does water dissolve a substance like NaCl? Draw a picture illustrating this. 8. What do hydrophobic and hydrophilic mean? 9. List cinque special properties of water and give an example (other than ones from this worksheet) of each. Appendix C place 1 Can you float a paper clip? Procedure take away a plasti c petri dish to overflowing with water. Without unreassuring the surface of the water, start at the lip of the plastic bowl and slide the paper clip across onto the surface of the water. Observe the way the water bends under the paper clip. Record your observations. copy using ethanol in place of water. Questions 1. What property (properties) of water is (are) demonstrated here? 2. How can the surface of water act this way? 3. why did the paper clip not float on the ethanol? magnetic core 2 Can you overcome the attraction? Procedure Using a dropper, place 2-3 drops of water on one glass slide. coiffure the second glass slide over the first. Try to pull them apart. Record your observations. Repeat using dry slides. Questions 1. What property (properties) of water is (are) at work here? 2. How are hydrogen bonds involved in this (these) property (properties)? . Explain why glass is described as hydrophilic. Center 3 How does water move through plants? Procedure Fill a capillary tube and then a straw with a red dye solution (red food coloring in water) and raise them to a good position. Record your observations. Questions 1. What properties of water are at work here? How does water rise up the tube? 2. why are these properties important to a plants survival? Center 4- Is a solid lighter than a liquid? Procedure Put a cube of ice in a beaker labeled and filled with alcohol and another in a beaker labeled and filled with water.Observe where the ice cube is in relation to the surface of the solution. Quickly remove the ice cubes for the next group. Record your observations. Questions 1. Why is the ice cube at the top or bottom of the alcohol? Water? 2. Why is frozen water less dense than liquid water? 3. Explain how this property of water is important to marine life. Center 5 Like dissolves like Procedure Place a spoonful of NaCl in a beaker of water and stir. Place 2 droppers full of salad oil in the beaker of water and stir. Record your observations. Quest ions 1. Why does NaCl dissolve in the water? 2.Why is it essential for compounds like seasoniness and glucose to be soluble in the water found in our body? 3. Does salad oil dissolve in water? Explain your answer. Center 6 Does water furuncle sooner if coarseness is added? Procedure check 2 beakers, one labeled deionized water and the other salt water. get 2 spoonfuls of salt to the beaker labeled salt water and stir to obtain a solution. Place each beaker, with a thermometer on it, on a hot plate and determine which beaker begins laboring first. Record your observations. Questions 1. Does the summing up of salt make the water boil faster or slower?Why? What does salt do to the boiling point of water? 2. Obtain an ice cube and add salt to it. What happened to the area of ice where the salt is applied? Why is salt applied to icy sidewalks or roads in the winter? What does salt do to the freezing point of water? Appendix D Properties of Water Test Name ____________________ Pe riod ______ Properties of Water Test critical review 1. Define the following vocabulary Cohesion Adhesion Surface Tension capillary action Hydrophobic Hydrophilic 2. How does water density deviate. a. as the temperature of water increases ____________ b. s the salinity of water increases ____________ c. as the temperature of water decreases ____________ d. as the salinity of water decreases ____________ 3. What is a polar molecule? 4. What type of bonds exist between the atoms of a water molecule? 5. What type of bonds exist between the adjacent water molecules? 6. Why is water called the universal solvent? 8. What happens to the volume of water as it freezes? What happens to its density? square/ mendacious True pretended Water contracts (gets smaller) when it freezes. True False Water has a high surface tension. True False ejector seat is water coming out of the air.True False It takes more energy to heat water at room temperature to 212o F than it does to change 212o F water to steam. Why is water called the universal solvent? What does polarity have to do with this? How many hydrogen bonds can each water molecule form? Differentiate between the intramolecular forces and the intermolecular forces at work inside and between water molecules. Please draw a water molecule. Label the following oxygen molecule, hydrogen molecules, ? +, ? -, and draw the intramolecular bonds between the oxygen and hydrogen atoms.