jake put a handful of nails in a jar he closed the jar and put the jar asidde a few weeks later the nails rusted what happen to the mass?
the mass stays the same because of the law of consviation of mass
i need to evidences for twomorows class can oly come up with one. help!!!!!!
To explain the law of conservation of mass and provide two pieces of evidence, you can use the following explanations:
The law of conservation of mass states that the total mass of a closed system remains constant over time, regardless of any physical or chemical changes that may occur within the system. In other words, during any process or reaction, the mass of the system before the reaction is equal to the mass of the system after the reaction.
Evidence 1: Rusting of Nails
In the case of the nails in the jar, when iron (present in the nails) reacts with oxygen in the presence of moisture, it causes oxidation, resulting in the formation of rust (iron oxide). Although the appearance and physical properties of the nails change during this process, the mass of the system, which includes the nails, jar, and surrounding air, remains the same. This is evidence for the law of conservation of mass.
Evidence 2: Burning of Paper
When you burn a piece of paper, the paper undergoes a chemical reaction with oxygen in the air, resulting in the formation of ash, smoke, and gases such as carbon dioxide and water vapor. Despite the visible changes in the paper, the total mass of the system (including the paper, ash, smoke, and gases) remains constant before and after the combustion process concludes. This is another example that supports the law of conservation of mass.
By using these two examples, you can provide evidence for the law of conservation of mass and show that mass remains constant even when physical or chemical changes occur.