Metals
Non-Metals
Plastics
Reactivity of Metals
Protect Metals
100

The way in which materials can be classified into two groups. 

What are metals and non-metals 

100

The two non-metals used daily 

What is wood and plastic? 

100
The plastics used daily are obtained using which chemicals 

What is natural gas and crude oil? 

100

The chemistry of a metal depends on its 

What is reactivity? 

100

The air and moisture in the atmosphere usually cause what 

What is rusting? 

200

 The metals that exist in the ground (Gold) are called.  

 

What is native metal? 

200

The two main properties of zinc. 

What is unreactive and low melting point? 

200

The plastics consist of large organic molecules called 

What is Polymers? 

200

The most reactive metal in the reactivity series is 

What is Aluminum? 

200

The paint that is used in order to prevent rusting is called 

What is Enamel base paint? 

300

The metals that are chemically combined with other elements are called/classified as. 

What are Ores 

300

The main properties of Aluminum 

What is electrical wires and cables, aluminum foil, window/door frames 

300

The use of plastic depends on 

What is properties? 

300

The air consists of how much oxygen

What is 20%? 

300

The petroleum based products that are used to prevent rusting lock out what 

What is water and oxygen? 

400

The metal can be extracted from the ores using which two methods. 

What is Heating and electricity 

400

The metal textiles can be used for 

What is Clothing, bedding and curtains 

400

The term hdpe in plastics stands for

What is high-density polythene? 

400

The metals that react with oxygen form what 

What are oxides? 

400

The process by which iron and steel objects are coated with a thin layer of non-corrosive metal is called

What is Electroplating?  

500

The metal silver can be used for what. 

what are ornaments, jewelry and utensils? 

500

The properties of the non-metals wood 

What is very hard, heat resistant, often brittle? 

500

The properties of polypropene are 

What is high melting point and high strength? 

500

The metals that do not react with sodium hydroxide or alkaline solutions are 

What is Iron, copper and silver?

500

The metal tin is used to galvanize what is this process called

What is tin plating? 

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