Imagine a beaker containing only oxygen molecules (O2). What type of substance is in the beaker?
1 point
1
Question 4
4.
Why can a mixture of sand and water be separated by filtration, but the hydrogen and oxygen in water cannot?
1 point
1
Question 5
5.
Which water property is shown in the image above?
2 points
2
Question 6
6.
The hydrogen bond between the 2 water molecules is an example of _________________, while the hydrogen bond between a water and another molecules (like the sides of the tube shown in the diagram) is an example of _____________
Required
1 point
1
Question 7
7.
Which of the following is true about the pH levels of acids and bases?
1 point
1
Question 8
8.
Certain insects can "walk on water" due to the _______ of water, created by ______.
1 point
1
Question 9
9.
Which of the following scenarios is an example of cohesion
