In this lab, you will observe the properties of oil, cornstarch, salt, and sodium bicarbonate. You will
use the properties to classify the substances as
ionic and covalent. Restate this goal in the form of
an investigative question.

An investigative question for the observation can be "How to determine whether a substance is ionic or covalent?"

All biological researches are made through the process of scientific method. A scientific method starts with an investigative question based on which a hypothesis is derived. A number of qualitative and quantitative experiments are done to test this hypothesis. Based on the results from the experiments, a hypothesis is declared true or false.