BIOLl 1107l Examl 1l l Principlesl ofl

BIOLl 1107l Examl 1l –l Principlesl ofl Biologyl Il (Latestl 2026/l 2027l Update)l Guide|l 100%l Verifiedl Questionsl &l Answersl |l Gradel A

Q:l pHl expresses

Answer:

protonl concentrationl inl al solution.

Q:l Acidsl havel al pHl of

Answer:

lessl thanl 7

Q:l Basesl havel al pHl of

Answer:

greaterl thanl 7

Q:l Inl acid-basel reactions

Answer:

al protonl donorl (acid)l transfersl al protonl tol al protonl acceptorl (base)

Q:l Greaterl H+l concentration

Answer: 1 / 3

lowerl pHl -l morel acidic

Q:l Lowerl H+l concentration

Answer:

higherl pHl -l morel basic/alkaline

Q:l Buffers

Answer:

compoundsl thatl minimizel changesl inl pH

Q:l pHl Scale

Answer:

Q:l Chemicall equilibrium

Answer:

occursl whenl thel forwardl andl reversel reactionsl proceedl atl thel samel ratel andl thel quantitiesl ofl reactantsl andl productsl remainl constant. 2 / 3

Q:l Endothermicl reactions

Answer:

mustl absorbl heat

Q:l exothermicl reactions

Answer:

mustl releasel heat

Q:l Energy

Answer:

thel capacityl tol dol workl orl supplyl heat.l

(Thisl capacityl existsl inl onel ofl twol ways—asl al storedl potentiall orl asl anl activel motion)

Q:l Storedl energyl is

Answer:

potentiall energy

Q:l Thel energyl ofl movementl isl called

Answer:

kineticl energyl orl thermall energy

Q:l Electronsl inl anl outerl shelll (fartherl froml thel positivelyl chargedl nucleus)l havel ______l potentiall energyl thanl dol electronsl inl anl innerl shell.

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