Alloy Mastery Quiz

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Explore alloys, and their strengths.

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SHIFA HUMAIRA KHAIRUL FAHMI

Malasia

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Alloy Mastery Quiz


Alloy Mastery QuizVersión en línea Explore alloys, and their strengths. por SHIFA HUMAIRA KHAIRUL FAHMI 1 What is a key property difference between pure metals and alloys? a Pure metals never conduct electricity b Alloys rust more easily c Alloys are always softer d Alloys are generally harder and stronger 2 What role does chromium play in stainless steel? a Increases readability b Forms a protective oxide layer c Removes carbon from steel d Adds magnetic property 3 Who is known for discovering alloys? a Harry Berlin b Ernest Rutherford c Harry Brearley d JJ Thompson 4 Which element added to iron in stainless steel helps prevent rust? a Zinc b Chromium c Copper d Lead 5 What protective layer forms on chromium-containing alloys to stop rust? a Nickel coating b Chromium oxide (Cr2O3) layer c Iron shell d Copper film 6 Why are alloys typically harder and stronger than pure metals? a They have less atoms per volume b They contain more water c Foreign atoms disrupt the regular lattice. d They are purer 7 What did Harry Brearley discover in his corrosion tests at 12.8% chromium? a Magnetic properties gained b Flammable coating c No rust observed d Immediate rusting 8 Which metal property is enhanced by alloying, compared to pure metals? a Lower density b Colorfulness c Hardness and strength d Electrical resistance only 9 What are the two key properties of pure metals mentioned? a They rust instantly; they dissolve in water b Layers slide easily; they are malleable and ductile c They are always cheap; they are non-conductive d They never bend; they are brittle 10 What happens when different-sized atoms are mixed into a metal lattice? a Increases ductility only b Removes all vacancies c Creates a perfect crystal d Disrupts orderly arrangement and hampers sliding 11 Which statement about stainless steel is supported by Brearley’s work? a It is softer than bronze b It conducts electricity better than copper c It dissolves in water faster d It resists rust due to chromium content. 12 What is one primary factor metals face daily, leading to corrosion? a Water and oxygen exposure b Ultraviolet light exposure c Pure heat without chemicals d High altitude only 13 Which alloying concept explains increased strength in alloys? a Foreign atoms disrupt atomic layers and hinder movement b More metal means weaker c Alloys are always softer than pure metals d Alloys have fewer atoms 14 What is the main variable in Experiment 8.1 Part A? a Volume of water b Type of plate c Plate color d Water temperature 15 In Experiment 8.1 Part B, what is used to dent the metal? a Nickel coin b Screwdriver c Hammer d Steel ball bearing 16 Based on Experiment 8.1 Part B If an alloy is harder, what happens to the dent size? a No dent forms b Dent is unchanged c Dent is larger d Dent is smaller

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Alloy Mastery Quiz

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Alloy Mastery QuizVersión en línea

por SHIFA HUMAIRA KHAIRUL FAHMI

What is a key property difference between pure metals and alloys?

What role does chromium play in stainless steel?

Who is known for discovering alloys?

Which element added to iron in stainless steel helps prevent rust?

What protective layer forms on chromium-containing alloys to stop rust?

Why are alloys typically harder and stronger than pure metals?

What did Harry Brearley discover in his corrosion tests at 12.8% chromium?

Which metal property is enhanced by alloying, compared to pure metals?

What are the two key properties of pure metals mentioned?

What happens when different-sized atoms are mixed into a metal lattice?

Which statement about stainless steel is supported by Brearley’s work?

What is one primary factor metals face daily, leading to corrosion?

Which alloying concept explains increased strength in alloys?

What is the main variable in Experiment 8.1 Part A?

In Experiment 8.1 Part B, what is used to dent the metal?

Based on Experiment 8.1 Part B If an alloy is harder, what happens to the dent size?