n object is made from a material that is hard, shiny, and can be hammered into thin sheets. Which of these is another likely property of the material?aIt dissolves in water.bIt has a low boiling point.cIt is a good conductor of heat.dIts density is less than that of water.

Which one of the following is NOT a property of pure metals?Good thermal conductorPoor electrical conductorHigh melting pointSolid at room temperatureI DON'T KNOWSUBMIT ANSWER

Which property is the most important for a metal used in cutlery?Low densityGood heat insulatorLow melting pointUnreactive

Why is lead a pure substance?AIt is composed of many different substances.BIt can be separated by different chemical processes.CIt has a chemical composition that is not fixed.DIt is an element that is naturally occurring in nature.

Here are some properties of Substance X. • It is a soft grey solid with a dull surface. • When cut with a knife, the cut surface is shiny. The surface does not stay shiny for long because substance X reacts with the oxygen in the air to form an oxide. • It reacts violently with water and gives off the gas hydrogen. • It has a melting point of 63.5°C. • It burns with a violet-coloured flame. a Write down three properties of Substance X, and state whether each property is a physical property or a chemical property.

Which one of the following is NOT a property of pure metals?High densityHigh boiling pointNot ductileMalleable