What is the MOST common substance dissolved in both salt and fresh water?
4 points
4
Question 3
3.
Why is the water unsafe for humans to drink in the picture below?
What is one way that it could be made safe for humans to drink?
1 point
1
Question 4
4.
The total amount of all salts dissolved in water is called:
3 points
3
Question 5
5.
What does it mean when you say you have "Hard Water"? What are two ways that you can tell that you have hard water?
4 points
4
Question 6
6.
You are walking along a dry, dusty road in summer. Feeling really thirsty, you stop by a clear, running stream. Would you drink the water? Why or why not?
4 points
4
Question 7
7.
In order for us to be sure that our water is safe to drink, it must be tested regularly. Provide at least four items that water is tested for before it is safe for us to drink. (pg. 344)
