Chemistry

Chemistry, 31.07.2019 23:30, ForbesDrew

Et the lead out! that is really graphite in your pencil, not lead. graphite is a form of carbon. use the physical properties of graphite to classify it using the choices below. a) metal b) nonmetal c) metalloid d) rare earth element

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Social Studies, 10.07.2019 05:00, janiyaf8941

Graphite is an example of carbon. what are the characteristics of graphite that make it suitable to be used as pencil lead?

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Biology, 29.07.2019 12:00, alexis3060

Each substance has a unique set of properties that depends on the kinds of atoms it has and how the atoms are connected, or bonded. bonding is related to the electrons in an atom, and there are different kinds of bonds. as a result, some substances can have the same atoms but different bonds. substances that are different but have the same atoms are called allotropes. allotropes have very different properties. diamond and graphite are well-known allotropes. graphite is used in pencils for writing and is sometimes called lead. diamond is colorless and transparent, and is one of the hardest substances known. graphite is dark gray and soft. when we write, layers of graphite easily transfer from the pencil to the paper. although they’re different, diamond and graphite each only contain one kind of atom—carbon. how do you think the bonds between carbon atoms might be different in diamond and graphite? use household materials to build physical models to you develop your ideas. describe what you learned from your models. what other kinds of allotropes are there? what kinds of properties and atomic bonds do they have? ( )

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How is graphite different from other allotropes of carbon? a. graphite forms only from carbon atoms, without other atoms mixed in. b. the carbon atoms in graphite are arranged randomly, without a crystalline structure. c. the carbon atoms in graphite are arranged in widely spaced layers. d. the carbon atoms in graphite are packed extremely densely and tightly.

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Physics, 31.07.2019 16:30, kcnawlay170

Get the lead out! that is really graphite in your pencil, not lead. graphite is a form of carbon. use the physical properties of graphite to classify it using the choices below. a) metal b) nonmetal c) metalloid d) rare earth element

Answers: 2

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