BIOL 1001 EXAM 1 COMPREHENSIVE
ASSESSMENT 2026 SOLVED QUESTIONS
SOLUTIONS GRADED A+
◉ process by which new chemical bonds are formed or existing
bonds are broken, converting one substance into another
Answer: chemical reaction
◉ 3 major types of chemical bonds
Answer: ionic, covalent, hydrogen
◉ atoms that have lost or gained electrons are charged and are
called _____
Answer: ions
◉ atoms that have lost electrons become
Answer: positively charged ions
◉ atoms that have gained electrons become
Answer: negatively charged ions
,◉ oppositely charged ions that are attracted to each other are bound
into a molecule by
Answer: ionic bonds
◉ bond that forms between uncharged atoms that share electrons
Answer: covalent bonds
◉ both atoms exert the same pulling force and the bond is called
Answer: non polar covalent bond
◉ electrons are not always equally shared and these bonds are
called
Answer: polar covalent bond
◉ partial opposite charges in different molecules attract each other,
attractive forces between polar molecules
Answer: hydrogen bonds
◉ outermost shell is full
Answer: inert
◉ outermost shell is partially full
, Answer: reactive
◉ tendency of the molecules of a substance to stick together
Answer: cohesion
◉ cohesion of water molecules along a surface
Answer: surface tension
◉ water-soluble molecules
Answer: hydrophilic
◉ water-insoluble molecules that repel and drive together
uncharged and non-polar molecules like fats and oils
Answer: hydrophobic
◉ solutions where H+ > OH-
Answer: acidic
◉ solutions where OH- > H+
Answer: basic
◉ the degree of acidity of a solution is measure using the
ASSESSMENT 2026 SOLVED QUESTIONS
SOLUTIONS GRADED A+
◉ process by which new chemical bonds are formed or existing
bonds are broken, converting one substance into another
Answer: chemical reaction
◉ 3 major types of chemical bonds
Answer: ionic, covalent, hydrogen
◉ atoms that have lost or gained electrons are charged and are
called _____
Answer: ions
◉ atoms that have lost electrons become
Answer: positively charged ions
◉ atoms that have gained electrons become
Answer: negatively charged ions
,◉ oppositely charged ions that are attracted to each other are bound
into a molecule by
Answer: ionic bonds
◉ bond that forms between uncharged atoms that share electrons
Answer: covalent bonds
◉ both atoms exert the same pulling force and the bond is called
Answer: non polar covalent bond
◉ electrons are not always equally shared and these bonds are
called
Answer: polar covalent bond
◉ partial opposite charges in different molecules attract each other,
attractive forces between polar molecules
Answer: hydrogen bonds
◉ outermost shell is full
Answer: inert
◉ outermost shell is partially full
, Answer: reactive
◉ tendency of the molecules of a substance to stick together
Answer: cohesion
◉ cohesion of water molecules along a surface
Answer: surface tension
◉ water-soluble molecules
Answer: hydrophilic
◉ water-insoluble molecules that repel and drive together
uncharged and non-polar molecules like fats and oils
Answer: hydrophobic
◉ solutions where H+ > OH-
Answer: acidic
◉ solutions where OH- > H+
Answer: basic
◉ the degree of acidity of a solution is measure using the
