Chemistry Exam Revision

What is the smallest part of an element called?

A substance made of only one type of atom.

These are often made when different atoms react together

Plastics are made from polymers that are waterproof and can be moulded

True

False

Almost all plastic is biodegradable.

True

False

Which one of the following compounds is made of a metal and a non-metal?

carbon dioxide

iron oxide

hydrogen sulfide

Groups in the periodic table are grouped together because they have s..... p..... .

a mixture is (2 or more) substances that are not chemically joined / bonded together

True

False

What is the process called: a gas turns into a liquid

The temperature at which water changes to steam is 100 °C. What is this temperature called?

Diamond and graphite are forms of ...

Metals are good ___________ of thermal energy and electricity.

Iron is a metal that is usually mixed with carbon and other metals to form ______ .

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