Unit 1 AOS 1 - Reactivity of Metals (6)

What does this diagram represent?

• Metallic bonding model

• Atomic bonding model

• Anions Cation bonding model

• Electronegativity bonding model

Why are metals good conductors of electricity?

• The mobile protons being able to transfer energy (heat) quickly and easily

• The mobile electrons being able to transfer energy (heat) quickly and easily

• The space between atoms being able to transfer energy (heat) quickly and easily

• The mobile atoms being able to transfer energy (heat) quickly and easily

Why do metals have high melting point and hardness?

• The mobile protons create a strong attraction between the cation and the electron

• The mobile electrons create a strong attraction between the anion and the electron

• The mobile electrons create a strong attraction between the cation and the electron

• The mobile protons create a strong attraction between the anion and the electron

Why do metals become shinny when polished?

• The mobile electrons at the surface reflect the light

• The mobile protons at the surface reflect the light

• The mobile electrons collide and release light energy

• The mobile protons collide and release light energy

Which of the following elements is the most reactive metal?

• Carbon

• Gold

• Iron

• Potassium

Which of the following is the least reactive metal?

• Oxygen

• Platinum

• Zinc

• Sodium

What does this diagram represent?

• Formation of metal without lustre

• Formation of metal with reduced hardness

• Formation of an alloy

• Formation of a metal with reduced heat conductivity

To produce a metal with larger crystals and softness..

• Annealing is conducted

• Quenching is conducted

• Tempering is conducted

• Metals are alloyed

What will cause a metal to snap due to large amount of dislocations?

• Annealing

• Quenching

• Tempering

• Work hardening

How many elements on the periodic table are naturally occuring metals?

• 53

• 63

• 73

• 83