Chemistry of the environment | 11 Flashcards
(5 cards)
1
Q
Describe the properties of water
A
Neutral in PH
Colorless
Boils at 100c
Freezes at 0 C
Very good solvent
High specific heat capacity
decreases in density when feezing
1
Q
Why do experiments use distilled water
A
Normal water is often impure and its properties can change , experiments use distilled water for accuracy
2
Q
Test For water
A
Add water to anhydrous copper sulfate , if it changes to blue , liquid contains water
Dipping blue cobalt chloride paper into liquid , if paper turns pink , liquid contains water
3
Q
What does lack of fresh water do to humans
A
Typhoid
Cholera
diarrhea
4
Q
Pollution
A
Modification that takes place on human environment , caused by a human influence
