Answers

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Answers
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A Write the names of the elements.

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

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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 cant conduct ELECTRICITY.

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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.

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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) conductivity
• 2. You should collect all the ___ before you
  conduct the analysis.
• a) samples b) couriers
  c) examples
• 3. The suitability of a material to a particular
  job depends ___ its properties.
• a) from b) on
  c) at
• 4. The property of lasting a long time before
  wearing out is known as ___.
• a) density b) effectiveness
  c) durability

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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.

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B Choose the best alternative to complete the
sentences.

• 1. That sounds ___, but is it true?
• a) interest
• b) interesting
• c) interestingly
• 2. Mike and Jack ____ be neighbours when they
  lived in London.
• a) use to
• b) used to
• c) 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 to
• b) must
• c) could
• 5. I ___last week but it looks horrible.
• a) cut my hair
• b) had my hair cut
• c) have cut my hair
• 6. Whats the capital of _ Netherlands?
• a) a
• b) /
• c) the

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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.

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

• take up get across get on set up get
  round to
• 1. I dont 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.

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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.

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C Choose the best alternative to complete the
sentences.

• 1. Its dangerous to cross a street outside a ___
  crossing.
• a)commuter
• b) pedestrian
• c) bitter
• 2. Most ___ use a tape measure.
• a) tailors
• b) relatives
• c) burglars

• 3. How often do you use public ___?
• a) traffic
• b) transport
• c) travel
• 4. There are lots of __ of cars over buses. They
  are faster and more comfortable.
• a) increase
• b) advertisements
• c) advantages

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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