Carbon Allotropes and Compounds Quiz

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Questions and Answers

Which property is characteristic of diamond?

  • Hardest substance known (correct)
  • Hexagonal layered structure
  • Slippery texture
  • Good conductor of electricity

What is a key feature of graphite's structure?

  • It is composed of hexagonal layers stacked together. (correct)
  • It is the hardest known material.
  • It is made of spherical molecules.
  • It has a rigid molecular structure.

What distinguishes fullerenes from other allotropes of carbon?

  • They have a spherical shape. (correct)
  • They have a rigid structure.
  • They are made entirely of carbon atoms.
  • They conduct electricity well.

Which of the following statements about graphite is true?

<p>It has a slippery feel. (C)</p> Signup and view all the answers

What is the significance of the name 'Buckminster Fuller' in relation to carbon allotropes?

<p>He designed structures resembling fullerenes. (D)</p> Signup and view all the answers

What key property of carbon allows it to form a vast number of compounds?

<p>Its strong covalent bonds with other carbon atoms (C)</p> Signup and view all the answers

Which of the following elements can carbon bond with to create compounds?

<p>Hydrogen, oxygen, nitrogen, and others (B)</p> Signup and view all the answers

What is the term for carbon's ability to form long chains and rings?

<p>Catenation (B)</p> Signup and view all the answers

What type of bonds can link carbon chains?

<p>Single, double, or triple bonds (C)</p> Signup and view all the answers

What characteristic allows carbon to bond with four other atoms?

<p>Its valency of four (B)</p> Signup and view all the answers

What characterizes saturated compounds?

<p>They contain carbon atoms linked by single bonds using all valencies. (C)</p> Signup and view all the answers

Which of the following is an example of an unsaturated compound?

<p>Ethene (Câ‚‚Hâ‚„) (D)</p> Signup and view all the answers

What is the first step in drawing the structure of a carbon compound?

<p>Link carbon atoms with single bonds. (A)</p> Signup and view all the answers

Which of the following statements about carbon's tetravalency is true?

<p>Tetravalency allows carbon to bond with a maximum of four other carbon atoms. (D)</p> Signup and view all the answers

How many hydrogen atoms are present in propane (C₃H₈)?

<p>8 (B)</p> Signup and view all the answers

What type of covalent bond is formed in the hydrogen molecule (Hâ‚‚)?

<p>Single covalent bond (B)</p> Signup and view all the answers

How many pairs of electrons are shared in the double covalent bond of the oxygen molecule (Oâ‚‚)?

<p>Two pairs (C)</p> Signup and view all the answers

Which molecule is described as having a triple covalent bond?

<p>Nitrogen (Nâ‚‚) (A)</p> Signup and view all the answers

What type of chemical bonding occurs between the oxygen atom and the two hydrogen atoms in water (Hâ‚‚O)?

<p>Single covalent bonding (C)</p> Signup and view all the answers

Which of the following correctly describes the electron-dot structure of ammonia (NH₃)?

<p>It achieves noble gas configuration through shared electrons. (C)</p> Signup and view all the answers

What is the primary focus of the document regarding the molecules discussed?

<p>Molecular structure and bonding (D)</p> Signup and view all the answers

Which term best describes the bonding situation in graphite and diamond?

<p>Different allotropes of carbon (D)</p> Signup and view all the answers

What is the formula for methane, a compound discussed in the document?

<p>CHâ‚„ (D)</p> Signup and view all the answers

Flashcards

Diamond

Hardest known substance, rigid structure

Graphite

Slippery, good electrical conductor, layered structure

Allotropes

Different forms of the same element with different properties

Fullerenes

Spherical carbon molecules

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Carbon Allotropes

Different structures of carbon with varying physical properties

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Covalent Bond

A chemical bond formed by the sharing of electron pairs between atoms.

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Single Covalent Bond

A bond formed by the sharing of one pair of electrons between two atoms.

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Double Covalent Bond

A bond formed by the sharing of two pairs of electrons between two atoms.

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Triple Covalent Bond

A bond formed by the sharing of three pairs of electrons between two atoms.

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Hydrogen Molecule (Hâ‚‚)

A molecule consisting of two hydrogen atoms bonded by a single covalent bond.

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Oxygen Molecule (Oâ‚‚)

A molecule consisting of two oxygen atoms bonded by a double covalent bond.

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Nitrogen Molecule (Nâ‚‚)

A molecule consisting of two nitrogen atoms bonded by a triple covalent bond.

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Water Molecule (Hâ‚‚O)

A molecule with one oxygen atom and two hydrogen atoms, bonded by single covalent bonds.

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Ammonia Molecule (NH₃)

A molecule with one nitrogen atom and three hydrogen atoms, bonded by single covalent bonds.

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Valence Electrons

Electrons in the outermost shell of an atom that participate in chemical bonding.

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Electron Dot Structure

A representation of an atom or molecule that uses dots to show the valence electrons.

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Carbon's Catenation

Carbon's ability to form strong covalent bonds with other carbon atoms, creating chains, branches, and rings.

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Carbon-Carbon Bonds

Strong and stable bonds between carbon atoms.

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Carbon's Valency

Carbon's ability to form four bonds with other atoms.

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Carbon Compounds Variety

Carbon bonds with many other elements (like hydrogen, oxygen, nitrogen), leading to many different compounds.

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Methane (CHâ‚„)

A simple carbon compound with one carbon atom and four hydrogen atoms.

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Ethane (C₂H₆)

A carbon compound with two carbon atoms and six hydrogen atoms.

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Saturated Compounds

Carbon compounds with only single bonds between carbon atoms.

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Unsaturated Compounds

Carbon compounds with double or triple bonds between carbon atoms.

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Saturated Compound

A carbon compound where all carbon atoms are bonded to other atoms by single bonds.

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Unsaturated Compound

A carbon compound with at least one double or triple bond between carbon atoms

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Carbon's Tetravalency

Carbon's ability to form four bonds.

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Carbon's Catenation

Carbon's ability to bond with other carbon atoms.

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Ethane draw

A saturated hydrocarbon with formula C₂H₆. All carbon-carbon links are single bond.

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Ethene Draw

An unsaturated hydrocarbon with formula Câ‚‚Hâ‚„. Contains one carbon-carbon double bond.

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Drawing Organic Structures

Creating visual representations of organic compounds by linking carbon atoms and adding hydrogen atoms to satisfy valencies.

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