英语翻译1)Below are some pieces if apparatus commonly used in th

英语翻译
1)Below are some pieces if apparatus commonly used in the laboratory.
A.Beaker
B.Boiling tube
C.Bunsen burner
D.Wire gauze
E.Tripod
F.Heat-resustant nat
G.Test tube holder
H.Evaporating dish(basin)
(a)Which pieces of apparatus would you use for the following experiments?
(i)Studying the reaction between a few cm3 if dilute hydrochloric acid with an iron nail.
(ii)Heating a few cm3 if water.
(iii)Boiling 100 cm3 of water.
2)The following paragraph describes some properties of water.
Water plays a very important role in our lives.It has its own unique properties.Water is tasteless and has no smell.It is a colourless liquid at room conditions.If we heat up water to 100℃,it will change into steam.On the other hand,if water is cooled down to 0℃,it will change into ice.Besides,if we add a piece of sodium to water,sodium will react with water vigorously,and hydrogen gas is produced together with the formation of an alkaline solution.
(a)What physical properties of water can you find from the above description?
(b)What chemical properties of water can you find from the above descriptions?
(c)State ONE physical changes that can be found from the above descriptions?
(d)Explain why you consider this a physical change.
(e)State ONE chemical change that can be found from the above description.
(f)Explain why you consider this a chemical change.
3)The following shows a list of pure substances.
Ammonia Oxygen Chlorine
Sodium Hydrogen Sodium chloride
Iron Sulphur Mercury
Water
(a)Which of the above substances are element?
(b)State the meaning of the term 'element'.
(c)Which of the above substances are compounds?
(d)State the meaning of the term"compound".
(e)If we mix iron and sulphur together,we can get a mixture of them.State the meaning of the term"mixture".
(f)Sodium chloride solution is formed by dissolving sodium chloride in water.Do you think sodium chloride solution is an element,a compound or a mixture?
4)Glucose is a compound made up of the elements carbon,oxygen and hydrogen.It is a common ingredient in drinks that provide us with energy.
(a)Do you think glucose has the same properties as those of its constituent element?Explain your answer.
(b)If we add glucose to a glass of water,a glucose solution is formed.Both glucose and water are compounds.Is glucose solution a compound or a mixture?Explain your answer.
(c)If we burn glucose in a jar of oxygen,it will react with oxygen to produce carbon dioxide and water.Write the word equation for the burning of glucose.

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