Note, however, that culture tubes do not have a lip. Chemists use test tubes to mix, heat and/or hold small quantities of chemicals for assays and laboratory experiments. Biologists use them to ...

And test tubes, bunsen burners and tongs to test ... we will need to design an experiment using scientific equipment. All of these things are known as variables. Control variables are things ...

This is a common experiment used to model ... of amylase enzyme into tube 1 but not tube 2. Leave at room temperature for five minutes. Test for starch (using iodine) and glucose (using Benedict ...