2What is the structure of water? Water is a compound that contains two hydrogen atoms (+) and one oxygen atom (-). Due to the electrical charges water is known as a polar molecule. Chemical formula is H2O.Looks like Mickey Mouse.
3Turn and TalkYou will partner with your neighbor. When I say go, partner A will discuss his/her understanding of the question while partner B listens. When I call time, partner B will share his/her understanding of the question and partner A will listen.Topic:Why does ice float?How does ice floating in water relate to the properties of water?What property of water is being discussed? How would our world be different without this property?
4What are the unique properties of water? Universal SolventCapillary ActionAdhesionBuoyancySurface TensionPolarityCohesionDensity
5How is water a universal solvent? Answer: Water has the ability to dissolve most substances.Definition:Universal Solvent: Water’s unique property to dissolve most substances.Teacher Guided Lab: “Water, the Universal Solvent”Real-World Examples:Salt and water - Instant pancake mixKool-aid - Alka-seltzerQuestion (copy): How would our lives be different if water could not dissolve most substances?Frayer Model: Think-Pair-Share
6Is water polar or nonpolar? Answer: Water is a polar molecule. It contains a positive and negative charge.Definition:Water’s property to have an even distribution of charge across the molecule.Background Info:Polar molecule mix with polar molecule. (saltwater)Polar and nonpolar do not mix. ( oil and water)Nonpolar mix with nonpolar. (milk and chocolatesyrup)Teacher Guided Lab: “Polar Pals”Quesion (Copy): How would our food look different if water was not a polar molecule?Frayer Model: Think-Pair-Shar
7Why do belly flops hurt?Answer: When entering a swimming pool your body is breaking the water’s surface tension.Definition:The force that acts on the particles in water that allow it to become tight.Background Info:The force that allows water to become tight is cohesion.Cohesion: The attractive force between water molecules.Teacher Guided Lab: Sinkin’ LincolnQuestion: How would the landscape of Earth be different if water molecules did not have cohesion and vaporized at room temperature?Frayer Models: (Surface Tension, Cohesion) Think-Pair-Share
8How do cruise ships float if they are so big? Answer: Cruise ships are able to float because of the upward force of buoyancy and the boats shape.Definition:- Buoyancy: The ability of a water to exert an upward force on an object that is immersed.Background Info.:Density of water is 1.0 g/mlSalt and depth increase buoyantforce.Real-World Examples:Salt Lake UtahIce floating in waterTeacher Guided Lab: “Passengers in a Boat”Question: Why can anyone float in theGreat Salt Lake in Utah?Frayer Model: Think-Pair- Share
9Bowling ball. Sink or float? Why? Answer: A bowling ball would sink in water because it is more dense than the water.Definition:Density: The measure of mass of a substance in a given volume.Background Info.:Density of water= 1.0 g/mlTeacher Guided Lab: “A Density Column”Frayer Model: Think-Pair-Share
10How do plant roots get their water from the soil? Answer: Plants roots rely on water’s property of capillary action.Definition:Capillary Action: The process that moves water through a narrow porous space.Real-World Ex.Water and celery stick (picture)Roots and soil waterPaper towel and spillsTeacher Guided Lab:- Capillary ActionFrayer Model: Think-Pair -Share
11Why does a suction cup stick better when you put water on it? Answer: Suction cups use water’s property of adhesion to stick to surfaces better.Definition:Adhesion: The tendency of water to stick to other substances.Real-World Examples:Suction cup on a windowRain on a rain jacketTeacher Guided Lab: Go with the FlowFrayer Model: Adhesion