What always happens in a chemical reaction?

Bubbling or fizzing during a chemical reaction is called

Name the element with atomic number 47

Which of the following is not a chemical reaction?

In a salt solution the salt which is added to the water is

What's the main difference between a compound and a mixture

When two solutions react to make an insoluble solid it is called

Iron and sulfur can be separated by

A compound containing only magnesium and sulfur would be called

Magnesium hydroxide contains the elements

Chalk could be separated from water by

Salt can be separated from water by

When two or more elements chemicall combine a __________ is formed

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