Match the correct explanation to the property of pure metals it explains. High densityHigh melting pointMalleableThermal conductivitySolid at room temperaturePossible AnswersWhen the metal is in the solid state the particles are tightly packed together and held in a fixed positions.The layers of metal atoms can slide over each other when a force is applied.A lot of energy is needed to overcome the strong electrostatic attraction between the metal ion and the delocalised electron.This is due to the high boiling and melting points.The delocalised electrons are free to move and can transferenergy.A lot of energy is needed to overcome the weak electrostatic attraction between the metal atom and the delocalised electron.The delocalised electrons are free to move and can carry anelectric current.I DON'T KNOWRESETSUBMIT ANSWER

Which one of the following is the reason why pure metals are good thermal and electrical conductors?The high melting and boiling points.The arrangement of metal atoms in layers.The movement of delocalised electrons.The strong force of attraction between metal ion and delocalised electron.

Which one of the following is NOT a property of pure metals?High melting pointPoor electrical conductorSolid at room temperatureGood thermal conductor

Metallic bonding always occurs between:Noble gasesMetal atomsNon-metal atomsMetal and non-metal atoms2A metallic bond is the electrostatic attraction between:Positive ions and delocalised electronsNegative ions and delocalised electronsElectrons and delocalised negative ionsElectrons and delocalised positive ions3Which of these is a property of metals?Poor conductors of electricityLow boiling pointsMalleableLow melting points4Which of the following statements best describes why metals are good conductors of heat?Metallic bonds are very strongLayers of metal atoms can slide past one another easilyMetals have high melting pointsThe delocalised electrons can carry thermal energy through the substance5Which of the following is a metal alloy?AluminiumCopperSteelIron6Metal alloys are generally harder and stronger than the individual elements they are made from. This is because the atoms of each element are of a different size and therefore:Disrupt the regular layers of ions, making them less malleableIncrease the size of the latticeLead to an increase in boiling pointLead to an decrease in boiling point

The melting point of copper is 1085°C.Order the following statements to explain why the melting point of copper is so high. 1st point2nd point3rd pointPossible AnswersThere are weak forces of attraction in all direction in the structure.A lot of energy is needed to overcome these forces of attraction between metal atom and the delocalised electron.There are strong forces of attraction in all direction in the structure.A lot of energy is needed to overcome these forces of attraction between metal ion and the delocalised electron.This causes the melting point to be very high.I DON'T KNOWRESETSUBMIT ANSWER

Which property of metals makes them good conductors of heat?A.Their mobile electronsB.Their hardnessC.Their melting pointD.Their ductilitySUBMITarrow_backPREVIOUS