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WorksheetsSalesa - Chemistry- Chapter 7
Total questions: 28
Worksheet time: 18mins
(a) is the only non-metallic element that conducts electricity.
There is divine wisdom that atoms bond in 3 different ways. What would happen if all elements chemically bonded with metallic elements?
______ compounds will not conduct electricity when solid and ______ compounds do not conduct electricity as liquids.
(a)
Examples of ionic compounds are-
ethanol
sodium chloride solution
molten lead bromide
sugar solution
(a) is the process by which compounds are broken down into simpler substances using electricity.
The negative electrode is called the _____ and the positive electrode is called the ______
(a)
What are the 2 ways of doing electrolysis of a solid compound to make it conduct electricity?
What will be left behind after we perform electrolysis on molten sodium chloride?
sodium hydroxide
sodium chloride
chlorine
nothing
Which of these products obtained from the electrolysis of salt are the basis for the chlor-alkali industry?
hydrogen
chlorine
sodium hydroxide
all of them
none of them
What are the 3 main uses for electrolysis in the metal industry today?
I passed electricity through potassium hydroxide and discovered potassium. I also discovered sodium a while later using this same method. Who am I?
(a)
My groundbreaking work in the fields of electricity and magnetism laid the foundation for modern electrical engineering and physics. I am also known as the Father of Electromagnetism. Who am I?
(a)
Extracting (a) from its mineral ore, bauxite was one of the most important discoveries in industrial electrolysis.
(a) is done to either protect a metal or to make it look attractive.
Write the 3 basic rules for electroplating an object with a metal X.
The most commonly used metals for electroplating are-
iron
silver
platinum
copper
tin
(a) is electroplated on iron to make car parts, bath taps. wheel rims etc.
Iron is electroplated with (a) to prevent reaction with food items.
Since chromium will not stick firmly to steel directly, it first has to be coated with _____ and _____ before it can be chromium-plated.
zinc and tin
copper and nickel
gold and silver
aluminium and iron
وليحلل خبث الطباع بنار الشرع عنها بكثرة الاجتهاد
وليدسها به ليجلو صداها وليهئي لصبغ اهل الرشاد
These abyaat by Syedna Ali bin Moula Mohammed al Walid RA shed light on what concept in chemistry?
An electrolytic cell converts ____ energy to ____ energy
electric to chemical
chemical to electric
The further apart the metals are in the reactivity series, the greater the (a) becomes.
Devices that store electrical energy are called (a)
(a) cells have redox reactions that continue for a limited time after which the voltage of the cell declines.
(a) ion batteries are an example of secondary cells which can be recharged by passing an electric current through them.
(a) batteries used in cars are very heavy but cheap to maufacture.
My 'Voltaic pile' was the first battery known to western civilization. Who am I?
(a)
الصناعة ماخووذة من الخلقة
Can you give two examples for this from the concepts you have learnt in Chemistry this year?
