Question

In your own words, give two reasons why it is important to wash your hands both before and after completing a lab (will give brainliest)

Answer 1

Reason number 1 (before) is that you could contaminate your samples if you have foreign material on your hands.
Reason number 2 (after) is that you could spread/or ingest dangerous chemicals or substances that you have handled in the lab.

Answer 2

1. You dont want to digest possible dangerous chrmicals
2. Your hands could be durty and contaminate the experiment