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English for Chemists lesson 2 GV: Châu Nhật Bằng Trường: ĐH Bà Rịa – Vũng Tàu...  Characteristics: tính chất  Density: tỉ trọng  API American Petroleum Institute gravity: độ API  Su

English for Chemists

lesson 2

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

 Composition: thành phần

- Paraffins

- Naphthenes

- Aromatics

- Asphaltenes

- sulfur: lưu huỳnh

- oxygen, nitrogen, hydrogen

- metal

 Characteristics: tính chất

 Density: tỉ trọng

 API (American Petroleum Institute) gravity: độ

API

 Sulfur content: nồng độ lưu huỳnh

 Viscosity: độ nhớt

 Pour point: nhiệt độ đông đặc

 Salt content: nồng độ muối

 Classification: phân loại

 Sweet oil: dầu ngọt

 Sour oil: dầu chua

 Heavy oil: dầu nặng

 Light oil: dầu nhẹ

 OPEC Organization of Petroleum Exporting

Countries

 IUPAC: International Union of Pure and Applied

Chemistry

 SI:International System of Units (Système

International d’unités)

 Barrel (bbl): 1bbl= 42 US gallon=159 liters

Grammar of sentences

 Clauses

Clauses are the building blocks of sentences A

clause is group of words that contains a subject and a verbs

Ex - chemistry is a science

- when the first oil well was first drilled in 1859 These are not clauses:

- after drilling the first oil well

- to produce kerosene

 Un- ( uncomfortable, uncountable, unemployed,

unhappy, unlucky, unprofessional, unknown,

unusual, unwell…)

 In-( incorrect, inactive, inconvenient, indirect,

invisible…)

 Dis-(dishonest, disorder, disbelief, dislike,

disagree…)

 Ir-, il-, im- (irregular, irresponsible, illegal,

illogical, impossible, impolite…)

 -able, -ible (remarkable, avoidable, memorable,

valuable, divisible )

 -ed (bored, shocked, pleased…)

 -ing (boring, shocking, pleasing, worrying…)

Plural Noun

-s 1 cat 2 cats

1 ipad 2 ipads

1 cup 2 cups

1 club 2 clubs

Plural Noun

-ES when noun end with one of these sounds

s z ch sh dg

1 page 2 pages

1 box 2 boxes

1 lunch 2 lunches

Plural Noun

Irregular Noun

Man men

Woman women

Child children

Person People

Mouse Mice

Datum data

Nucleus nuclei

Grammar of sentences

Subordinator: if, although, after, before, after, as soon as, unless, who, which, that, …

Independent

S + V

Clauses

Dependent

Subordinator + S + V

Grammar of sentences

Kind of sentences

COMPOUND-COMPLEX COMPLEX

COMPOUND SIMPLE

Grammar of sentences

 Simple sentence

A simple sentence is one independent clause

Ex:

- I enjoy playing tennis with my friends every weekend

- I enjoy playing tennis and look forward to it every weekend

- My friends and I played tennis and went swimming this weekend

Grammar of sentences

 Compound sentence

A compound sentence is two or more independent clauses joined toghether

golf.

2 Conjunctive

adverb

I enjoy tennis ; however, I hate golf.

Grammar of sentences

Coordinators Conjunctive

besides…

You study English at school;

moreover, you should watch TV in English at home.

nevertheless

Ihave learnt English for a long time ; however, I can not speak well

or otherwise I try hard to study English ; otherwise, I

need to find a new way to study it

so consequently

therefore

I have tried my best ; therefore, I know

I will be successful

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