BBC - GCSE Bitesize: Cracking. In order for it to be useful to us, crude oil is broken down in oil refineries into its component parts, known as fractions, and these can then be used for many different purposes. ![]() Fractions that are produced by the distillationdistillation: Distillation is when we make a liquid evaporate and then condense the vapour back to a purer liquid. This chemical reaction produces smaller hydrocarbons, including alkanes and alkenes. Ethene and other alkenes are unsaturated [unsaturated: An unsaturated compound contains at least one double or triple bond. Ethene can be used to make ethanol. Fuels made from oil mixtures containing large hydrocarbonhydrocarbons: Hydrocarbons are a group of compounds which contain the elements hydrogen and carbon. They do not flow easily and are difficult to ignite. Crude oil often contains too many large hydrocarbon molecules and not enough small hydrocarbon molecules to meet demand - this is where cracking comes in. Cracking allows large hydrocarbon molecules to be broken down into smaller, more useful hydrocarbon molecules. What does CC and BCC mean? Cc stands for "carbon copy." Anyone you add to the cc: field of a message receives a copy of that message when you send it. What does "bcc" mean? Answer. This abbreviation, which stands for carbon copy, is used in email headers to show other people that the message is being sent to. The CC and BCC fields when sending email. CC stands for “carbon copy,” while BCC stands for “blind carbon copy. What’s the Difference Between CC and BCC. Don't turn a blind eye to Outlook Bcc etiquette. When you generate an email. but that doesn't mean you won't have upright reasons for using it. What are CC and BCC in Gmail? How do I use them? Update Cancel. In email it just means that people in BCC receive the mail but only the sender is aware of this. British Broadcasting Corporation Home. a liquid evaporate and then condense the vapour back to a purer liquid. of crude oil can go through a process called cracking. CC vs BCC: Learn the difference between these two email fields and avoid an. Learn the difference between these two email. How to crack the TOP 15. Email spoofing is rampant. Spammers often send email that looks like it came from you, and there's little that you can do about it. Acronym Definition CC Credit Card. ![]() Fractions containing large hydrocarbon molecules are vaporised and passed over a hot catalystcatalyst: A catalyst changes the rate of a chemical reaction without being changed by the reaction itself. This breaks chemical bonds in the molecules, and forms smaller hydrocarbon molecules. Cracking is an example of a thermal decomposition [thermal decomposition : A reaction in which substances are broken down by heat. Some of the smaller molecules formed by cracking are used as fuels, and some of them are used to make polymerspolymers: Polymers are large molecules formed from many identical smaller molecules (monomers). Easy Ways to Use BCC in an Email (with Pictures)3. Exercise caution. Bcc is useful, in general, but it's not a perfect solution if you're trying to keep emails private. While there are standards set out for how Email clients should handle Bcc addresses, it's not a requirement. An email client may send the Bcc recipients as part of the header information. Search the help for your particular client, and chat with the online community to make sure your chosen client will send truly blind Bcc emails.
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