英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字,中文词皆可:



安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • [FREE] Match the following vocabulary: 1. A hydrocarbon that contains . . .
    Alkanes contain no double or triple bonds,** alkenes** contain a double bond, and** alkynes** contain a triple bond Functional groups are atom or group of atoms attached to hydrocarbons, while alkyl groups replace a hydrogen in a hydrocarbon
  • 4. 1: Hydrocarbon Functional Groups - Chemistry LibreTexts
    Unsaturated hydrocarbons have one or more double or triple bonds between carbon atoms Those with double bond are called alkenes and those with one double bond have the formula CnH2n C n H 2 n (assuming non-cyclic structures)
  • Which of the following hydrocarbons contain one or more triple
    Aromatics: These are hydrocarbons that contain a ring of atoms with alternating single and double bonds The most common example is benzene They do not contain triple bonds Alkynes: These are hydrocarbons that contain at least one carbon-carbon triple bond An example is acetylene
  • Solved If a hydrocarbon has no double or triple bonds, it is - Chegg
    If a hydrocarbon has no double or triple bonds, it is said to be a) Unsaturated, b) Supersaturated, c) None
  • Alkanes: Saturated Hydrocarbons Flashcards | Quizlet
    What are alkanes? They are hydrocarbons with only single bonds (saturated hydrocarbons) What are unsaturated hydrocarbons? They are hydrocarbons with at least one double bond How many pairs of electrons are shared in a single bond?
  • Hydrocarbons that contain at least one double bond and no triple bonds . . .
    Explanation: Hydrocarbons that contain at least one double bond and no triple bonds are called alkenes, which are unsaturated hydrocarbons Alkenes have one or more carbon-carbon double bonds The carbon atoms linked by a double bond are bound together by two bonds, one σ bond and one π bond
  • Why does no have a double bond? - Sage-Tips
    The double bond rule states that chemical elements with a principal quantum number greater than 2 for their valence electrons (period 3 elements and lower) tend not to form multiple bonds (e g double bonds and triple bonds)
  • 20. 2: Hydrocarbons - Chemistry LibreTexts
    Carbon atoms linked by a double bond are bound together by two bonds, one σ bond and one π bond Double and triple bonds give rise to a different geometry around the carbon atom that participates in them, leading to important differences in molecular shape and properties
  • Hydrocarbon Chains: Types, Structure, and Properties
    A hydrocarbon chain is a molecule built from a sequence of linked carbon atoms with hydrogen atoms attached These chains represent the backbone for an immense number of organic compounds Carbon atoms possess a unique ability to bond with each other, forming stable and extended chains that serve as the framework for more complex molecules found in nature and industry Saturated vs





中文字典-英文字典  2005-2009