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Chemistry of life

flash card revision

TermDefinition
Biomolecules What are the four classes of organic molecules called
What is tetravalency of carbon? Carbon has four free electrons in outer shell
Hydrocarbon Compounds formed by combining hydrogen and carbon
Catenation Property of carbon to form long chain with same or different atoms
Which properties of carbon makes it unique Small size, Covalency and catenation
Functional groups Specific groups that are added to hydrocarbon chains and gives them a different function and property
Which group is this called -SH Sulfhydryl
Which functional groups we find in acids? -COOH and NH2
How do we measure acids? By the strength of H+ ions
How do we identify a strong base in aqueous solution By seeing the complete dissociation of OH- ions
pH scale is used for what? To measure the strength of acidity and basicity of a reaction
How strong is pH 6 from pH 8? 100 times more acidic
State the two main properties of water which makes it unique polarity and Hydrogen Bonding
Polarity Difference of charge in an atom
Hydrogen bonding Attraction between hydrogen and oxygen atoms of different molecules
Electronegativity Attraction or pull towards electrons
Why do we feel cool after sweating Due to Hit heat of vaporization
Why is it pleasant in water during day than on land Due to high heat capacity
Why water always have a tendency to form droplets Due to attraction and bonding between same molecules called Cohesion
Water can Climb Heights in plants or stick to glass surface due to what? Due to attraction or sticking to different molecules by Adhesion
Why Ice is less dense than water? Ice has low temperature which makes hydrogen bond to form stable , lattice structure. Water at high temperature breaks Hydrogen bond and becomes dense
Created by: AntaraChail
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