6.5

Water Review Structure of Water Match the description of a specific part of the structure of water to its description Oxygen Has a negative charge Hydrogen Has a positive charge Polar Water is considered this because the opposite ends have slightly opposite charges Polar Covalent Bond Type of bond that holds multiple molecules of water together Put the property of water with its correct description Cohesion - Water's ability to stick to itselfAdhesion - Water's ability to stick to other substancesHigh Heat Capacity- Water requires a lot of energy to raise or lower its temperatureUniversal Solvent- Water is able to dissolve many other substancesNeutral pH - water has a pH of 7 and is considered neutralSurface Tension - water's is high and allows insects to 'walk on water'.Density - If an object is less dense than water it will float. If an object is more dense than water it will sink Match the property of water to how it is beneficial for living things Cohesion Allows for capillary action (Ex: Water moving up a straw) Surface Tension Allows small insects to stand on water Density Ice is less dense than water which allows it to serve as an insulator High Heat Capacity Helps organisms maintain homeostasis because it prevents a drastic change in temperature If something has a pH between 0-6 it is considered Acidic Basic Water has a pH of _, making it neutral. 14 7 Is H20 considered organic or inorganic? Organic Inorganic Put in the words to make each statement correct. Water (rain, ice, snow) has shaped our environment by physically and chemically weathering rock that only breaks the rock, without changing the minerals is called physical.Weathering that causes the minerals in rocks to be changed, leading to the deterioration of the rock is called chemical97 percent of Earth’s water is salt water in the oceansLeaving just 3 percent as fresh water. Of that fresh water, only 1 % of it is non-frozen as ice caps Decide if each example is physical or chemical weathering. chemical acid rain rusting rocks water dissolving minerals physical ice wedging landslide roots prying through