1Of twenty four carat gold and twenty two carat gold, which is pure gold and which is an alloy?
2Why would the goldsmith advise that bangles worn every day be made from twenty two carat gold?
3What is an alloy?
4Distinguish between a pure metal and an alloy.
5Distinguish between steel and stainless steel.
6Give a reason: steel is used far more than iron for making household kitchen articles.
7Give a reason: alloys are being used more and more in place of pure metals.
8Present in a table the metals that make up each of these alloys: (a) steel (b) stainless steel (c) brass (d) bronze.
9List the reasons why alloys are becoming more and more popular.
10Rama won a bronze medal in a competition. Which metals would her medal be made from?
11Make a list of the articles in your kitchen that are made of pure metals and of alloys.
12Write the five properties of an alloy.
13Why is duralumin made, and which metals does it contain?
14Silver and zinc are both white. What colour is the alloy made from them, and what does that tell us about alloys?