Lab: Ionic and Covalent Bonds

Question 1

Which substances were ionic?

Revolt · Accepted Answer

C: sodium chloride; D: sodium bicarbonate

Question 2

How does a conductivity apparatus test whether a solution has ionic or covalent substances in it?

Revolt · Accepted Answer

C: Ions complete the flow of electrons to form a circuit.

Question 3

Which of the following tools could have become cross-contaminated during the experiment if you had not cleaned them carefully between successive tests?

Revolt · Accepted Answer

A: Spoon; B: Beaker; C: Stirring Rod; D: Graduated Cylinder

Question 4

Identify all actions that you should take if you have chipped or broken glassware.

Revolt · Accepted Answer

A: Notify your teacher.; D: Notify classmates.; E: Dispose of it in the designated glass waste area.

Question 5

Carbon tetrachloride (CCl4) is ionic.✔ covalent.

Revolt · Accepted Answer

B: covalent.

Question 6

The concentration of ionic substances is important for the heart to beat. Your heart responds to electrical impulses that travel through heart cells that are made up mostly of water. Which properties of ionic compounds are important to support this function?

Revolt · Accepted Answer

A: Solubility in water; B: Conductivity

Question 7

How good were your predictions in the warm-up? 0 out of 4 right1 out of 4 right2 out of 4 right3 out of 4 right4 out of 4 right

Revolt · Accepted Answer

A: 0 out of 4 right

Question 8

What properties would you expect for CCl4? Select all that apply.

Revolt · Accepted Answer

A: It is likely a gas or liquid at room temperature.

Question 9

Calcium oxide (CaO) is ✔ ionic.covalent.

Revolt · Accepted Answer

A: ionic.

Question 10

What properties would you expect for CaO? Select all that apply.

Revolt · Accepted Answer

B: It is likely soluble in water.; C: It will likely light up a bulb in a conductivity apparatus.; D: It will likely have a high melting point.

Lab: Ionic and Covalent Bonds Answers

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