英文字典中文字典Word104.com



中文字典辭典   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   


安裝中文字典英文字典辭典工具!

安裝中文字典英文字典辭典工具!








  • Aldehyde - Wikipedia
    Aldehydes have properties that are diverse and that depend on the remainder of the molecule Smaller aldehydes such as formaldehyde and acetaldehyde are soluble in water, and the volatile aldehydes have pungent odors
  • Aldehyde | Definition, Structure, Examples, Facts | Britannica
    aldehyde, any of a class of organic compounds in which a carbon atom shares a double bond with an oxygen atom, a single bond with a hydrogen atom, and a single bond with another atom or group of atoms (designated R in general chemical formulas and structure diagrams)
  • Aldehyde Functional Group - Chemistry Steps
    In aldehydes, at least one hydrogen atom must be connected to the carbonyl carbon The other substituent can be a hydrogen, an alkyl, an aryl, vinyl, or, in general, any carbon chain The simplest aldehyde is formaldehyde (methanal), which has two hydrogen atoms attached to the carbonyl carbon
  • 18. 7: Aldehydes and Ketones - Chemistry LibreTexts
    The difference between aldehydes and ketones is the placement of the carbonyl group within the molecule An aldehyde is an organic compound in which the carbonyl group is attached to a carbon atom at the end of a carbon chain
  • Aldehydes: What We Should Know About Them - MDPI
    Aldehydes represent one of the categories of volatile organic compounds (VOCs), which are categorized as chemicals with boiling points up to 260 °C and can be found in indoor environments in the gaseous phase
  • Aldehydes and ketones | Organic chemistry - Khan Academy
    We will be learning about the nomenclature and reactions of aldehydes and ketones, including how to use acetals as protecting groups
  • an introduction to aldehydes and ketones - chemguide
    This page explains what aldehydes and ketones are, and looks at the way their bonding affects their reactivity It also considers their simple physical properties such as solubility and boiling points
  • Aldehyde Functional Group - ChemTalk
    Aldehydes have to have hydrogen attached to the carbon instead of another carbon (as found in ketones) In aldehydes, the carbonyl group is located at the end of the carbon chain, while in ketones, the carbonyl group is located in the middle of the carbon chain


















中文字典-英文字典  2005-2009

|中文姓名英譯,姓名翻譯 |简体中文英文字典