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ChemComm 1D
Test Description: ChemComm 1D
Instructions: Answer all questions to get your test result.
1) a process for softening water in which hard-water ions are exchanged for other ions
A
water softener
B
hard water
C
ion exchange
D
hydrologic cycle
2) water containing high concentrations of calcium, magnesium, and/or iron ions
A
hard water
B
ion exchange
C
detergent
D
water softener
3) a compound or mixture of compounds to assist cleaning that does not form insoluble precipitates with Mg2+ or Ca2+ as soaps do
A
detergent
B
hard water
C
hydrologic cycle
D
ion exchange
4) a device containing an ion-exchange resin that is used to treat water by removing ions causing water hardness
A
water softeners
B
ion exchange
C
detergent
D
hydrologic cycle
5) repetitive processes of rainfall, run-off, evaporation, and condensation that circulate water within Earth's crust and atmosphere
A
detergent
B
hydrologic cycle
C
ion exchange
D
water softener
6) a process for softening water in which hard-water ions are exchanged for other ions
A
detergent
B
ion exchange
C
hydrologic cycle
D
water softener
7) water containing high concentrations of calcium, magnesium, and/or iron ions
A
ion exchange
B
water softener
C
hard water
D
detergent
8) a compound or mixture of compounds to assist cleaning that does not form insoluble precipitates with Mg2+ or Ca2+ as soaps do
A
hard water
B
detergent
C
hydrologic cycle
D
ion exchange
9) a device containing an ion-exchange resin that is used to treat water by removing ions causing water hardness
A
water softener
B
detergent
C
hard water
D
hydrologic cycle
10) repetitive processes of rainfall, run-off, evaporation, and condensation that circulate water within Earth's crust and atmosphere
A
ion exchange
B
hydrologic cycle
C
detergent
D
water softeners
*select an answer for all questions
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