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PS 9
Test Description: V
Instructions: Answer all questions to get your test result.
1) .00001 M solution of HCl has a pH of
A
3
B
5
C
2
D
4
2) which acid base reaction will yield a neutrtal solution
A
strong acid / weak base
B
strong acid / strong base
C
all of the answers are correct
D
weak acid / strong base
3) soaps and detergents are
A
ionic compounds
B
molelcular compounds
C
non polar compounds
D
covalent compounds
4) the anion in a soap contains
A
sulfoate group
B
water molecule
C
sodium or potassium ion
D
carboxylate group
5) which part of soap dissolves in water?
A
sodium or potassium ion
B
negatively charged end of hydrocarbon chain
C
cation
D
all of the answers are correct
6) which is not true of bleach
A
removes substance causing stain
B
disinfects
C
kills bacteria
D
changes colored substances to colorless
7) bleach should never be mixed with
A
acid
B
detergent
C
water
D
soap
8) which statement is not true about antacids
A
they repair bone and cartilage
B
can change pH
C
antacids are basic substances
D
they neutralize stomach acid
9) when is a detergent more useful for cleaning than soap
A
none of the answers are correct
B
emulsifying oil droplets
C
removing grease
D
cleaning in hard water
10) which statement about bases is incorrect
A
they taste bitter
B
they contain hydronium ions
C
none of the answers are correct
D
they turn litmus paper blue
*select an answer for all questions
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