This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Graphite and diamond are both made of carbon, but only one is good for pencil lead. Why is graphite ... (Read 129 times)

Jkov05

  • Hero Member
  • *****
  • Posts: 556
on: Jul 15, 2018

Graphite and diamond are both made of carbon, but only one is good for pencil lead. Why is graphite
  useful for this task while diamond is not? What will be an ideal response?



Question 2

What is the main feature of metallic bonding, and what properties result from this main feature? What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

kishoreddi

  • Sr. Member
  • ****
  • Posts: 329
    • Your online Help in Biology and chemistry
Reply #1 on: Jul 15, 2018
Answer to Question 1

The carbon atoms in diamond are held together by covalent bonds; they share electrons so that each
carbon atom has the noble gas configuration of eight electrons in its outermost electron shell. Diamond
is very strong. The carbon atoms in graphite are covalently bonded to form sheets, so the sheets are
internally strong but are held together by weak van der Waals bonds. Small pieces of graphite can
flake off along planes when a pencil is run across a piece of paper.



Answer to Question 2

In metals, electrons in the outermost electron shells can move freely from one atom to another. The
movement of electrons accounts for the metals metallic luster, electrical and thermal conductivity, and
ease of reshaping.



Jkov05

  • Member
  • Posts: 556
Reply 2 on: Jul 15, 2018
Wow, this really help

marict

  • Member
  • Posts: 304
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Your skin wrinkles if you stay in the bathtub a long time because the outermost layer of skin (which consists of dead keratin) swells when it absorbs water. It is tightly attached to the skin below it, so it compensates for the increased area by wrinkling. This happens to the hands and feet because they have the thickest layer of dead keratin cells.

Did you know?

The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.

Did you know?

The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.

Did you know?

Pink eye is a term that refers to conjunctivitis, which is inflammation of the thin, clear membrane (conjunctiva) over the white part of the eye (sclera). It may be triggered by a virus, bacteria, or foreign body in the eye. Antibiotic eye drops alleviate bacterial conjunctivitis, and antihistamine allergy pills or eye drops help control allergic conjunctivitis symptoms.

Did you know?

Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.

The world has been horrified recently at a U.S. Congress so polarized and paralyzed that it cannot p The world has been horrified recently at a U.S. Congress so polarized and paralyzed that it cannot p
The learning and retention of the mirrordrawing task by H.M. Despite his good retention of the task, ... The learning and retention of the mirrordrawing task by H.M. Despite his good retention of the task, ...
Good contact feels full, confident, and deliberate and establishes a warm connection between massage ... Good contact feels full, confident, and deliberate and establishes a warm connection between massage ...
Good ethical judgment comes from both learning and experience. Good ethical judgment comes from both learning and experience.
Human activity has released carbon from sequestration in long-term reservoirs Human activity has released carbon from sequestration in long-term reservoirs
Carbon dioxide (~390ppm) Carbon dioxide (~390ppm)
Video: Methods that regulate pH

For a complete list of videos, visit our video library