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Basic Chemistry Water

Atoms: basic unit of matter One Carbon atom Charge on sub atomic particle Electron cloud Nucleus NEXT

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Matter Elements Compounds Ionic Compound Covalent compound Organic Anything that takes up space/has mass Elements Pure substance – 1 type of atom Compounds Two or more elements chemically bound Ionic Compound Transfer electrons Covalent compound Share electrons Organic Carbon based molecules Inorganic Not carbon based HOME

Water Polarity Hydrogen Bonding Solutions Cohesion Adhesion Heat capacity Acids/Bases HOME

uneven distribution of electrons around a molecule Polarity uneven distribution of electrons around a molecule Electrons are attracted to ‘O’ more than ‘H’ creating charged parts of the molecule Bond – represents sharing an electron Water

Hydrogen Bonds (created because of polarity) positively charged hydrogen atoms of one water molecule are attracted to the negatively charged oxygen of the next water molecule Creates properties of water NEXT

Definition: attraction between molecules of the same substance Cohesion Definition: attraction between molecules of the same substance Explains: Bead formation of water on surfaces Surface tension NEXT NEXT

Definition: attraction between molecules of different types Adhesion Definition: attraction between molecules of different types Explains: Meniscus Capillary action Transpiration NEXT

Humans ability to regulate internal body temperature Heat Capacity Definition: amount of heat that water can absorb  hence high boiling point Explains: Humans ability to regulate internal body temperature Why species can live in a body of water for all seasons Next

Evenly distributed mixture where one substance is dissolved in another Solution Evenly distributed mixture where one substance is dissolved in another thing that does the dissolving (water) thing that gets dissolved (salt) Next

Water natural splits into its two ions (charged parts) Reactant Product Dissociation of water Water natural splits into its two ions (charged parts) Ration of these ions creates acidic or basic solutions pH – measure of acidity and alkalinity (basicity) Next Equal H+ and OH-

Method of controlling pH changes Buffers Method of controlling pH changes Importance Human body regulation Ocean thermal regulation Home

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