Chemical Change Experiment

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In a closed system nor physical or chemical change can destroy nor create any matter. Physical change affects the form or the way an object looks without changing the chemical composition of it. Yet on the other hand chemical change has everything to do with the composition, such as applying heat to an object, you can't “unheat” it. The experiments in chapter two have been adding certain substances or combining them and seeing if the mass changes at all, and doing so we mix substances like salt and water or even copper and sulfur.

Antoine Lavoisier is credited as the best chemist to live on Earth, because of the law he mad named “The Law of Conservation of Mass”. His law stated that “in any closed system the total mass remains the same, regardless of what changes take place inside” (Article 1). This statement is the outline for the entire law. How mass never changes in any object. One of his more well known “experiments” said he had a glass container and put an apple in there “Antoine put fruit into a sealed container, and measured its mass, then left it in a warm place for a few days. The fruit rotted and changed into a putrid mess… but nothing escaped the glass” (Article 1). Lavoisier also disproved the theory of combustion what was when a metal was heated it gained weight which if was true then the law
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The law of conservation of mass tells us how mass is not created nor destroyed and these labs proved it. When we mixed salt and water together there was no significant change that was shown. Our class average was -.02 to +.02 for a non significant change. Most sources of error didn't really come from human mistakes but from the scale, they couldn't have been zero’d out as much as they should have been or we might have spilled a bit of salt or something. But with lab 2.6 some gas could have escaped if we weren't fast enough to close the bottle or if the bottle wasn't sealed all the

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