IGCSE General properties of metals

What particles would you find in a metallic structure?

• negative ions

• positive ions

• free electrons

• free protons

Which of the following best describes the arrangement of electrons in a metal?

• All of the electrons are delocalised

• None of the electrons are delocalised

• Only the valency electrons are delocalised

• A maximum of 2 electrons are delocalised for each atom

Which phrase best describes the arrangement of the heavier particles in a metal?

• lattice of positive ions

• lattice of atoms

• lattice of negative ions

• lattice of positive and negative ions

Which one is NOT a property of most metals?

• Ductile

• Malleable

• Magnetic

• Sonorous

Which of the following is NOT a characteristic of most metals?

• Brittle
• Good conductor
• Ductile
• Malleable

• 1 and 2

• 1 and 7

• 3 and 5

• 5 and 6

Which properties of metal makes it a good choice to make a cooking pot out of? Choose TWO

• it has luster - it is shiny

• it is a good conductor of heat

• it is ductile - able to be made into a wire

• it has a high melting point

Tags

NGSS.MS-PS3-3

Which property of metal makes it a good choice to make a car engine from?

• it has luster

• it has a high melting point

• it conducts electricity

• it has magnetism

Hydrochloric acid is used to clean metals.

The acid reacts with an oxide layer on the surface of the metal, forming a salt plus water.

Which word describes the metal oxide?

• Alloy

• Base

• Element

• Indicator

• It can be represented by a chemical formula.

• It contains a mixture of tin and lead.

• It contains tin and lead chemically combined

• It has a higher melting temperature than tin or lead.