GRAPHING PRACTICE PROBLEMS Directions: All three graphs must be drawn on graph paper. Please use a ruler and be as
neat as possible. Please complete all questions in the spaces provided on this page.
Practice Problem 1: The following table shows the quantity of oxygen gas that can be obtained from the
electrolysis of various quantities of water. Draw a graph of the data, observing all the practices of good
graph construction. This includes: labeling each axis, scaling each axis appropriately, plotting the points
correctly, connecting the points, and giving the graph a title.
Quantity of water
3.0 grams
10.0 grams
18.0 grams
23.0 grams
28.0 grams
Quantity of Oxygen
2.7 grams
8.9 grams
16.0 grams
20.4 grams
24.9 grams
1. What is the independent variable?
2. On which axis will the independent variable be placed?
3. What is the dependent variable?
4. On which axis will the dependent variable be placed?
5. Predict how much oxygen could be obtained from 15 grams of water. How reliable is this prediction?
6. Predict how much oxygen could be obtained from 32 grams of water? How reliable is this prediction?