Question

groups in mr. lins science class were given these directions to follow.
which is the most likely reason that the group results were different?
there were not enough supplies.
there were too many variables.
the instructions were read incorrectly.
the directions were not followed properly.
paper chromatography

1. take a container and fill it halfway

with water.

1. cut a strip of filter paper.
2. place a dot of ink near one end of

the paper.

1. place the end of the paper with the dot

in the water.

1. wait 5 minutes.
2. record observations.

Explanation:

In a scientific experiment, if groups follow different procedures (not following directions properly), results will vary. Supplies (if enough) and variables (if controlled) - as per standard experiment design - shouldn't cause result differences if in a school - lab setting (assuming basic supply sufficiency and simple variable control). Instructions read incorrectly would lead to different execution, but directions not followed properly is a more direct cause (as it encompasses all aspects of not adhering to the procedure).

Answer:

The directions were not followed properly.