Lab: Ionic and Covalent Bonds

Question 1

In carbon dioxide (CO2), there are two oxygen atoms for each carbon atom. Each oxygen atom forms a double bond with carbon, so the molecule contains two sets of double bonds.Two sets of double bonds means that the total number of electrons being shared in the molecule is

Revolt · Accepted Answer

eight.

Question 2

The compound cyanogen (CN)2 has covalent bonds shown in this diagram.

Revolt · Accepted Answer

six

Question 3

Why can a hydrogen atom form a covalent bond without fulfilling the octet rule?

Revolt · Accepted Answer

Hydrogen’s valence shell can hold only up to two electrons.

Question 4

Which is most likely a covalent compound?

Revolt · Accepted Answer

CF4

Question 5

Walls made of paraffin wax, a covalent compound, help keep the temperature in a room steady as night changes into day and day into night. What is the most important property of covalent compounds that allows paraffin wax to help keep a room’s temperature level?

Revolt · Accepted Answer

The wall would absorb extra heat during the day when the sun is out, then release the heat back into the room when the sun goes down.

Question 6

Which best describes most covalent compounds?

Revolt · Accepted Answer

brittle

Question 7

Covalent bonds can be best described as

Revolt · Accepted Answer

neutral atoms coming together to share electrons.

Question 8

The compound ethylene (C2H4) is represented by this diagram.

Revolt · Accepted Answer

Two electrons are shared between each hydrogen atom and the carbon atom bonded to it, and four electrons are shared between the carbon atoms.

Lab: Ionic and Covalent Bonds Answers

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