Covalent Bonds

Question 1

A candle’s wick is the fabric string that holds the flame, and it burns down at a constant slow pace when the candle is lit. The wick is usually surrounded by wax.Which is the most important property of covalent compounds that makes them useful for making candle wax?

Revolt · Accepted Answer

a low melting point

Question 2

Which best describes most covalent compounds?

Revolt · Accepted Answer

brittle

Question 3

For a science fair project about food and chemistry, Bill looks around his kitchen for examples of covalent compounds. What evidence can Bill use in his project to show that water (H2O) acts like other covalent compounds?

Revolt · Accepted Answer

He can demonstrate that water can be boiled on a simple kitchen stove.

Question 4

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 5

What best explains how two oxygen atoms, each with six valence electrons, can bond with each other?

Revolt · Accepted Answer

Each atom can share two electrons with the other so that each atom has eight valence electrons.

Question 6

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 7

Which is most likely a covalent compound?

Revolt · Accepted Answer

CF4

Question 8

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

Revolt · Accepted Answer

six

Question 9

The element carbon (C) is most likely to form covalent bonds with the element

Revolt · Accepted Answer

selenium (Se).

Question 10

Which best describes most covalent compounds?

Revolt · Accepted Answer

brittle

Covalent Bonds Answers

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