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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