English for Chemists Lesson 4 pdf

Refining OperationCracking The breaking up of heavy molecular weight hydrocarbons into lighter hydrocarbon molecules by application of heat and pressure, with or without using cataly

English for Chemists

Lesson 4

GV: Châu Nhật Bằng Trường: ĐH Bà Rịa – Vũng Tàu

Refining Operation

Cracking The breaking up of heavy molecular weight

hydrocarbons into lighter hydrocarbon molecules by

application of heat and pressure, with or without using

catalysts.

Polymerization process of reacting monomer molecules together in a chemical reaction to form three-dimensional

networks or polymer chains.

Isomerizationthe process by which one molecule is

transformed into another molecule which has exactly the same atoms, but the atoms are rearranged

Reforming a chemical process used to convert petroleum refinery naphthas, typically having low octane ratings, into

 De- : away, from, down

dewaxing, depentanizer, dehyhrogen reaction, dethroned, devalue

 Thermo- or therm- : hot

Thermodymamics, thermodynamic, thermometer, thermostable

 Co- : together, with

co-author, coeducation, co-worker, co-star,

cooperation

 -tion prohibit prohibition, regulate regulation

-sion explode explosion, persuade persuasion

-ssion permit permission, admit admission,

succeed succession

-version convert conversion, pervert perversion

-ation alter alteration, explode exploration,

hesitate hesitation

-ition Compete competition, define definition

-ption receive reception, subscribe subscription, consume consumption

 TH sound

THUMB

Beginning

Middle

 Anything

 Toothpick

 Athletic

 Mouthwash

End

 Bath

 North

 Beneath

 Fourth

 South

Voiced ‘TH’ at the beginning of words

The That They Them There This Those These

 Clothing

 Leather

 Mother

 Another

 Weather

 Northern

 Smooth

 Bathe

 Breathe

“TH” Exceptions

 Thomas

 Thompson

 Theresa

 Thailand

 Thames

Grammar of sentences

 Complex sentence

and one (or more) dependent clauses.

Ex:

- One of my favorite films is ‘My Love’, which is in Russian

Grammar of sentences

 Noun clause

A noun clause is a dependent clause that

functions as a noun It can be a subject, object,

or subject complement

Ex

- I know that people have different opinions about their future

- I believe that my students are very intelligent

- I hope that they love studying English

Grammar of sentences

 That-clauses are made from statements.

They states that science courses require a

laboratory period

It also points out that lad attendance is

mandatory.

 Wh-word clauses are formed from

wh-question They are introduced by

Wh-words such as: who, when, where, what, which, how, how much, how many…

 Ex

- I do not know where student café is.

- I explained how complex sentences are formed.

- Do you know which answer is correct?

 If-whether-clauses are formed from

yes/no questions

I don’t know whether (or not) I should teach

you less

correct

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