ANSWERS

A Write the names of the elements.

Hg - Mercury B - Boron I - Iodine K – Potassium  

B Use the word in brackets to make a new word and complete the sentence.

1. The DENSITY of water is approximately one gram per cubic centimeter..

2. This element becomes EXPLOSIVE when mixed with air.

3. The atomic WEIGHT of oxygen is 15.9994.

4. This material can’t conduct ELECTRICITY.

C Use the words from the box to complete the text.

Scientists had been producing hydrogen for years before it was recognized as an element. Written RECORDS indicate that Robert Boyle produced hydrogen gas as early as 1671 while experimenting with iron and acids. Hydrogen was first recognized as a DISTINCT element by Henry Cavendish in 1766.

Composed of a single proton and a single electron, hydrogen is the simplest and most ABUNDANT element in the universe. It is ESTIMATED that 90% of the visible universe is composed of hydrogen.

D Choose the best alternative to complete the sentences.

1. The ___ of a metal is how shiny the metal is.a) malleability b) lustre c) conductivity2. You should collect all the ___ before you conduct the analysis.a) samples b) couriers c) examples3. The suitability of a material to a particular job depends ___ its

properties. a) from b) on c) at4. The property of lasting a long time before wearing out is

known as ___. a) density b) effectiveness c) durability

Part 2 Grammar

A Put the verbs in brackets in the correct tense.1. The classroom is empty now. Everybody has gone

home.2. I want to lose weight, so this week I am not

eating lunch.3. Have you ever been to Italy?4. The house was very dirty because they had not

cleaned it for weeks.5. You look very tired. Have you been running?6. Now she understands that she can't ignore this

problem.

B Choose the best alternative to complete the sentences.

1. That sounds ___, but is it true?a) interestb) interesting c) interestingly 2. Mike and Jack ____ be

neighbours when they lived in London.

a) use to b) used toc) would 3. I called the agency and I ___

find out more about the flat.a) had to b) could c) managed to  

4. Before the telephone was invented people ____ write letters.

a) had tob) must c) could 5. I ___last week but it looks

horrible.a) cut my hairb) had my hair cutc) have cut my hair6. What’s the capital of _

Netherlands?a) ab) /c) the

C Change these sentences into the Passive.

1. They will arrest the kidnapper.The kidnapper will be arrested.2. They show this commercial on MTV.This commercial is shown on MTV.3. The light went out when they were serving

the meal.The light went out when the meal was being

served. 4. They have told him to leave.He has been told to leave.

Part 3 Vocabulary A Use the appropriate phrasal verb ...

take up get across get on set up get round to

1. I don’t get on with my neighbours. We often have arguments.

2. I must tidy my room. I never seem to get round to it.

3. The doctor advised him to take up yoga.

B Use the word in brackets to make a new word and complete the sentence.

1. My sister is very ambitious.2. Their exploration led them into the

deserts of central Asia.3. The most dangerous chemical

produced by cars is carbon monoxide.

C Choose the best alternative to complete the sentences.

1. It’s dangerous to cross a street outside a ___ crossing.

a)commuter b) pedestrian c) bitter2. Most ___ use a tape

measure.a) tailorsb) relatives c) burglars

3. How often do you use public ___?

a) traffic b) transport c) travel4. There are lots of __ of

cars over buses. They are faster and more comfortable.

a) increase b) advertisements c) advantages

Grading scale

6 → 51% - 60% 21.5 – 25 7 → 61% - 70% 25.5 – 29.5 8 → 71% - 80% 30 – 33.5 9 → 81% – 90% 34 – 38 10 → 91% - 100% 38.5 - 42