"the building block of matter; indivisible", "atom" "a bond between two atoms where the atoms share electrons", "covalent bond" "a substance composed of only one type of atom", "element" "a bond between molecules due to the attraction of slightly negative and slightly positive charged atoms", "hydrogen bond" "two or more atoms chemically combined", "molecule" "What kind of bond is this?", "covalent bond" "What kind of bond is this?", "hydrogen bond" "What is water made of?", "2 hydrogen atoms & 1 oxygen atom" "Why is most water on Earth liquid and not gas?", "Because of hydrogen bonds between water molecules." "the phase change from a liquid to a solid", "freezing" "the phase change from a solid to a liquid", "melting" "the phase change from a liquid to a gas", "vaporization" "What phase of matter of water has the following properties:", "ice" "What phase of matter of water has the following properties:", "liquid water" "What phase of matter of water has the following properties:", "gaseous water" "What phase of water has a hexagonal shape caused by their hydrogen bonds?", "Ice has a hexagonal shape" "What phase of water has a tetrahedron shape caused by their hydrogen bonds?", "liquid water" "How does higher salt content (salinity) in water effect the boiling point of water.", "High salinity increases the boiling point of water" "the amount of energy needed to raise the temperature of a substance by 1 °C", "heat capacity" "mass per unit volume", "density" "How much water must an object displace to be able to float?", "An object needs to displace as much water as it weighs to be able to float." "the attractive force between two unlike substances", "adhesion" "Why is ice less dense than liquid water?", "ice molecules expand, causing more air pockets" "the attractive force between two or more of the same molecules", "cohesion" "a property of liquid that allows it to resist external forces", "surface tension" "What allows water molecules to "stick" together?", "cohesion" "What allows this water strider to walk on water?", "surface tension" "What causes water droplets to stick to this spider web?", "adhesion" "What principle is this?<br /> the buoyancy of a submerged object = the weight of the displaced liquid = weight of the object", "Archimedes' Principle" "What does it mean when an object has positive buoyancy?", "the object will float" "What does it mean when an object has neutral buoyancy?", "the object will be suspende in liquid" "What does it mean when an object has negative buoyancy?", "the object will sink" "the force a liquid exerts on a body in all directions at one depth", "hydrostatic pressure" "What causes decompression sickness?", "When a diver goes up to the surface of the water to quickly at the end of a dive." "the process where matter in an area of high concentration moves to an area of low concentration", "diffusion" "When something becomes completely incorporated into a liquid.", "dissolve" "Does a lower temperature have more or less dissolved oxygen?", "more dissolved oxygen" "Does a higher temperature have more or less dissolved oxygen?", "less dissolved oxygen" "minerals and elements that serve a vital function in living organisms", "nutrients" "when two or more things work together to produce a greater impact, positive or negative, than either would have by itself", "synergy" "How acidic or basic something is", "pH" "Which mineral can make food taste different and corrode metal pipes", "Chloride" "Which mineral can stain your laundry and make water taste bitter", "Iron" "Which mineral an lower the dissolved oxygen in water, cause algae to rapidly reproduce, block hemoglobin in the blood from carrying oxygen to cells", "Nitrogen" "Which mineral can cause plants and protists to overly reproduce and lower the dissolved oxygen in water.", "Phosphorus" "Measurement of the amount of solids in a liquid that CAN pass through a 2-micron filter Includes oxygen & nutrients", "total dissolved solids (TDS)" "Measurement of the amount of solids in a liquid that CANNOT pass through a 2-micron filter Includes soil, trash & debris", "total suspended solids (TSS)" "Measurement the amount of light that is scattered by the solid particles", "Turbidity" "the settling of materials at the bottom of a liquid", "Sedimentation" "the settling of very small particles at the bottom of a liquid Includes clay and sand Considered a pollution factor", "siltation" "Bacteria found in the feces of humans and other animals Can cause pollution & disease in water", "Fecal Coliform"
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