Biology_The Chemistry of Life

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The second set of study material for Mr. Jones's Unit test in Biology

organic chemistry

the chemistry of carbon found in living things

organic compounds

compounds found in living organisms that are carbon-based

ions

atoms that gained electrons or lost electrons

molecules found in living things water

fifty to ninety-five percent

molecules found in living things ions

less than one percent

molecules found in living things organic

almost all of the rest of molecules in living things

carbon atom is able to form ___ bonds with other elements

four

carbon is the _____ element that can form four bonds

smallest

the three most common elements of life

CHO

other important elements of life

nitrogen calcium phosphorous iron and sodium

water is used as a

coolant, transport medium and habitat

transparency

light can pass through

cohesion

water molecules are strongly attracted to other water molecules, sticking together making it difficult for small objects to break through

adhesion

when molecules of different types are attracted to each other

solvent

water dissolves many substances

cooling effect

water can evaporate at temperatures below the boiling point, as water evaporates surfaces cool down

density

water becomes less dense as temperature decreases

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