we are weighing stuff on a scale and i need to know how to make a chart

First -- your class is spelled science HONORS.

Assuming you're weighing the same volume of "stuff," you'll need to put the names of the things you're weighing vertically along the left side of the chart. Across the top of the chart, write increments of the weights, such as 1 mg, 2 mg, 3 mg, etc.