What are compounds?
Two or more elements combined chemically.
Name two differences between compounds and mixtures.
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Give an example of a compound. What elements is it made of?
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How can you separate the elements in a compound?
Chemically. / By chemical means.
What are acids and bases?
Compounds that react easily with other substances.
What is litmus?
It's a dye that changes color when it touches acids/bases.
How does a litmus test work?
Acids change litmus-dyed paper from blue to red; bases change it from red to blue.
Give one example of an acid and one example of a base.
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What happens when an acid and a base combine?
They chemically react, neutralizing each other and created salt and water.
Explain the pH Scale. What is it? How does it work?
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