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.

Using substances such as cornstarch, salt, and sodium,, how can you determine whether the substances' bonds are ionic or covalent based on their individual properties?

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pstnonsonjoku pstnonsonjoku · Answer 2 · 2021-10-19T11:30:04+02:00

Cornstarch and oil are covalent substances while salt and sodium bicarbonate are ionic substances.

An ionic substance exists as an electrostatic interaction between oppositely charged ions. As such, ionic substances do interact well with water. This is the reason why ionic substances dissolve in water and such solutions serve as electrolytes. Salt and sodium bicarbonate are ionic substances.

Covalent substances are formed when electrons are shared between atoms. Covalent substances often do not interact well with water unless they are polar and their solutions are often not electrolytes. cornstarch and oil are covalent substances. They do not dissolve in water.

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