Andijon davlat universiteti ingliz tili fonetikasi kafedrasi til aspektlari amaliyoti

Activity 3. Answer the questions

1. I have a bag of new and old 2p coins . The coins are made from different metals. Which of the following would be a reason why a magnet does not attract the old coins:

a) They are rusty	b) They are not made of magnetic material
e) They are dirty	d) They repel the magnet

2. Which two of these metals will attract a magnetic?

iron, aluminium, brass, steel, copper, lead

3. Use the following words to fill in the spaces below.

solvent solid solution soluble dissolved insoluble

If a … disappears when it is mixed with water,then we say it has … .

When this happens a … is formed.

A solid that will disolve is said to be … .

The liquid that makes it disolve is called the ….

A solid that will not dissolve is called …. .

4. A bag of flour has been tipped into a box of Cornflakes.What is the easiest way to separate the large cornflakes from the flour?

5. What equipment would you use to separate out the following mixed upmaterials?

Choose from : Magnet, filter paper and funnel, sieve, spoon and burner

a) stones and water

b) pins and rice

c) sand and gravel

d) sand and water (stirred)

e) flour and rice crispies

f) sugar and water