answer is A the accepted model of the atom was changed
Answer:
Number 6 is correct all substances are made of molecules.
Explanation:
A molecule is a formation of atoms or a chemical and all substances are made of chemicals.
3 elements
Rubidium
Manganese
Oxygen
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Answer:
sodium/potassium/rubidium/caesium/francium
Explanation:
all are group I elements, so they all have similar properties
Light slows down when it goes into water (from 299 million m/s to 225 million m/s).