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An _______ is a substance that cannot be separated into simpler substances.
An alloy is a _______ of metals.
A ________ is a substance that has two or more elements in it.
Potassium is at the top of the __________ series.
A _____ is a shiny element that conducts electricity.
The ____ caused corrosion.
A ____ is the chemical opposite of an acid.
A ______________ reaction is when an acid and an alkali cancel each other out.
We use an _________ to tell us if our solution is an acid or a base.
Can you ________ those fighting dogs?