Which substances were ionic?
How good were your predictions in the warm-up?
Was the hypothesis, repeated above, completely supported? Justify your answers.
Corn starch, one of the covalent compounds, is solid at room temperature. The property of being solid is more common to ionic compounds. So, the hypothesis was mostly supported except for this one data point.
Select all facts that you mentioned.
How does a conductivity apparatus test whether a solution has ionic or covalent substances in it?
Which of the following tools could have become cross-contaminated during the experiment if you had not cleaned them carefully between successive tests?
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Carbon tetrachloride (CCl4) is ionic.✔ covalent.
What properties would you expect for CCl4? Select all that apply.
Calcium oxide (CaO) is ✔ ionic.covalent.
What properties would you expect for CaO? Select all that apply.
If a substance is ionic, then it likely will
be a crystalline solid, be soluble in water, and conduct electricity
Select all properties you listed for ionic.
If a substance is covalent, then it likely will
be a liquid or gas, not be soluble in water, and not conduct electricity
Select all properties you listed for covalent.
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