the amount of space occupied by a substance.occurs when a substance is converted to a new substance.the digits in any measurement that are known with certainty with an additional one digit which is uncertain.is anything that has mass and occupies space.whether the material is more active or less active than other members of it's chemical family.process of changing solid to gas without passing through liquid state.is the simplest form of matter since it is composed of only one kind of atom.whether it reacts with acids, bases, and oxygen, gas, or not. ![]()
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