BSC 114 Chapter 3 Exam Questions
and Answers All Correct
What is the hydroxyl ion (OH-) concentration of a solution of pH 8?
8 × 10-6 M
10-6 M
8M
10-8 M - Answer-10-6 M
The partial negative charge at one end of a water molecule is attracted to the partial
positive charge of another water molecule. What is this attraction called?
an ionic bond
a van der Waals interaction
a hydrogen bond
a covalent bond - Answer-a hydrogen bond
What is the arrow pointing to?
The figure shows a solution of different molecules. Some of them consist of two small
atoms attached to a bigger one. Some are negatively charged, and consist of one big
atom attached to the small one. There are also small positively charged atoms, which
are pointed by an arrow.
hydrogen ion
hydronium ion
electron
hydroxide ion
water molecule - Answer-hydrogen ion
What is the arrow pointing to?
The figure shows a solution of different molecules. Most of these molecules consist of
two small atoms attached to a bigger one. Some of the molecules are negatively
charged, and consist of one big atom connected to the small one. These molecules are
pointed by an arrow. There are also small positively charged atoms.
hydronium ion
hydroxide ion
water
proton
, hydrogen ion - Answer-hydroxide ion
In a neutral solution the concentration of _____.
water molecules is less than the concentration of hydroxide ions
hydrogen ions is less than the concentration of hydroxide ions
hydrogen ions is equal to the concentration of hydroxide ions
water molecules is less than the concentration of hydrogen ions
hydrogen ions is greater than the concentration of hydroxide ions - Answer-hydrogen
ions is equal to the concentration of hydroxide ions
Each water molecule is joined to _____ other water molecules by ____ bonds.
two ... hydrogen
four ... polar covalent
three ... ionic
two ... polar covalent
four ... hydrogen - Answer-four ... hydrogen
The unequal sharing of electrons within a water molecule makes the water molecule
_____.
change easily from a liquid to gaseous form
polar
hydrophobic
ionic
have a low surface tension - Answer-polar
The tendency of an atom to pull electrons toward itself is referred to as its _____.
ionic potential
tonicity
covalency
electronegativity
polarity - Answer-electronegativity
and Answers All Correct
What is the hydroxyl ion (OH-) concentration of a solution of pH 8?
8 × 10-6 M
10-6 M
8M
10-8 M - Answer-10-6 M
The partial negative charge at one end of a water molecule is attracted to the partial
positive charge of another water molecule. What is this attraction called?
an ionic bond
a van der Waals interaction
a hydrogen bond
a covalent bond - Answer-a hydrogen bond
What is the arrow pointing to?
The figure shows a solution of different molecules. Some of them consist of two small
atoms attached to a bigger one. Some are negatively charged, and consist of one big
atom attached to the small one. There are also small positively charged atoms, which
are pointed by an arrow.
hydrogen ion
hydronium ion
electron
hydroxide ion
water molecule - Answer-hydrogen ion
What is the arrow pointing to?
The figure shows a solution of different molecules. Most of these molecules consist of
two small atoms attached to a bigger one. Some of the molecules are negatively
charged, and consist of one big atom connected to the small one. These molecules are
pointed by an arrow. There are also small positively charged atoms.
hydronium ion
hydroxide ion
water
proton
, hydrogen ion - Answer-hydroxide ion
In a neutral solution the concentration of _____.
water molecules is less than the concentration of hydroxide ions
hydrogen ions is less than the concentration of hydroxide ions
hydrogen ions is equal to the concentration of hydroxide ions
water molecules is less than the concentration of hydrogen ions
hydrogen ions is greater than the concentration of hydroxide ions - Answer-hydrogen
ions is equal to the concentration of hydroxide ions
Each water molecule is joined to _____ other water molecules by ____ bonds.
two ... hydrogen
four ... polar covalent
three ... ionic
two ... polar covalent
four ... hydrogen - Answer-four ... hydrogen
The unequal sharing of electrons within a water molecule makes the water molecule
_____.
change easily from a liquid to gaseous form
polar
hydrophobic
ionic
have a low surface tension - Answer-polar
The tendency of an atom to pull electrons toward itself is referred to as its _____.
ionic potential
tonicity
covalency
electronegativity
polarity - Answer-electronegativity
