In this lesson, you will define and identify types of substances and compare them to types of mixtures through the use of molecular and real-world examples.

Learn about analysing and identifying substances with Bitesize GCSE Chemistry (AQA).

Radon in basements, lead in drinking water, exhausts from cars and chemicals released from landfills are just a few examples of toxic substances that can hurt ...

Chemical substances can be single chemical molecules, like water, or mixtures of different chemicals. Air is a mixture nitrogen, oxygen, water, carbon dioxide ...

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Pure substances can be made up of atoms or molecules. Atoms are the smallest parts of elements - pure substances found on the periodic table.

Substances may be either elements or pure compounds. They may also be solid, liquid, or gas. Some of the elements (such as silver) exist in the solid form.

A chemical substance is a unique form of matter with constant chemical composition and characteristic properties. Chemical composition · Chemical purity · Chemical property

A pure substance that has only one kind of atom and cannot be broken into two or more simpler substances by physical or chemical means is an element. Therefore, ...

27 дек. 2017 г. · Everything on the Periodic Table is a substance. Copper, Hydrogen, Carbon, Oxygen, Gold, Silver, Aluminum, Berkelium, Californium, Sulfur, Helium, Krypton, ...