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The law of conservation of mass, states that mass is conserved in chemical reactions. chemistry is the study of the composition of matter, (what stuff is made of) ans the characteristic changes in the composition of matter. Such as what kind of "stuff" will burn, rust, rot, or otherwise change what it is made out of. If we add the weight (mass) or reactants such as paper and air before the fire and then take the mass (weight) after the fire of the smoke ans ashes, the mass is the same. ONLY in nuclear reactions is mass converted to energy, only in stars nuclear reactors , and atom bombs is mass (weight) converted to energy( light, or heat). So stars are losing mass (weight). A physical change is not a change in composition, typical physical changes are the melting of solids, and the boiling of liquids. Also cutting something big into little pieces, is a physical change NOT a chemical change a short board is still a board.
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∙ 14y ago
Wiki User
∙ 11y agoThe mass at the beginning of a chemical or physical change is the same as the mass at the end of the chemical or physical change. Mass is neither created nor destroyed in physical or chemical changes.
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∙ 15y agothe total mass of all reacting substances are equal before and after the reaction
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∙ 13y agoMass is conserved (mass remains the same) in chemical and physical changes.
Now, I'm not sure if that's what you're asking or not.
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∙ 11y agoby eating cereal with milk
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How does physical change and chemical change affect mass?
Neither of them affect mass in a closed system.
If the mass of all objects before a chemical change is 200kg what would the mass be after the chemical changed occurred?
There will be a gain in mass.....but you can't predict the new change in mass unless you weigh the products after the chemical change occurred.
How do physical and chemical changes affect mass?
law of consevation of mass states that the total mass before a chemical reaction is the same as the total mass after the chemical reaction
Is a change in mass an indicator of chemical reaction?
No, it is NOT an indicator of a chemical reaction. Change in color IS an indicator of chemical change, though.
Does the conservation of mass change if a chemical change occurs?
yes
How does physical change and chemical change affect mass?
Neither of them affect mass in a closed system.
If the mass of all objects before a chemical change is 200kg what would the mass be after the chemical changed occurred?
There will be a gain in mass.....but you can't predict the new change in mass unless you weigh the products after the chemical change occurred.
How do physical and chemical changes affect mass?
law of consevation of mass states that the total mass before a chemical reaction is the same as the total mass after the chemical reaction
How does temperature affect physical and chemical chemical change?
A change in temperature can change the rate of physical or chemical change.
Why isn't a change in mass an indicator of chemical change?
A change in mass is not always an indicator of a chemical change because mass is conserved in chemical reactions. The total mass of the reactants is equal to the total mass of the products. However, there are some exceptions where a change in mass can occur due to the release or absorption of gases or changes in the physical state (such as evaporation or condensation) during a chemical reaction.
Is a change in mass an indicator of chemical reaction?
No, it is NOT an indicator of a chemical reaction. Change in color IS an indicator of chemical change, though.
What does not affect its chemical composition?
the mass number! :)
How does the mass of an objects affect inertia?
Mass is the measure of inertia and if you change the mass the inertia will change.
What will the mass be after the chemical change?
Total mass never changes.
Is mass a chemical change or physical change?
Mass is neither a physical nor chemical change; however, it is a physical property of matter.
Does the conservation of mass change if a chemical change occurs?
yes
Mass does not change during a chemical change how about for a physical change?
Physical changes are like cutting paper. The mass does not change. Chemical changes do not change total mass either. If you put a candle in a sealed container so that you may measure the total mass of the candle and the air before burning, then light the candle electrically but keep everything sealed, the total mass after burning will still be the same. But if you measure only the candle, then its mass has changed. So the mass of one single 'ingredient' will change during a chemical change.
