The atom theory has been around since the 19th centry
The answer is that they all have metallic structures
Answer:
Round to the number of significant figures in the original question. However, if you're going to proceed with further calculations using this mass, it's best not to round, as rounding will cause your answer to be less precise.
Explanation:
Flammability is a chemical change because when you burn something, it no longer has the same properties.