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Even if you change the shape and amount of a substance it's stays the same?
Wiki User
∙ 15y ago
By changing the size, shape, or amount of a given substance, a physical change is being exerted. A physical change is a change in which the molecular structure of the substance remains the same. For a substance to be considered "changed", a chemical reaction must take place resulting in a reconfiguration of molecules. For example, with enough heat, wood undergoes a chemical reaction, converting it to carbon. Chipping a log with a hatchet, on the other hand, would entail a physical change.
Wiki User
∙ 15y ago
Wiki User
∙ 13y agoIntensive propertyies.
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When matter undergoes a physical or chemical change the amount of mass changes or stays the same?
The amount of mass stays the same.
What happens to a substances temperature during a phase change?
stays the same
Is burning of an incense stick as physical or a chemical change give reason?
Its an irreversible (chemical) change because when we burn it, it produces smoke and turns into ash. And because of that it can't come back to its original shape and stays irreversible.
How does oxygen content change with altitude?
The density of air decreases with altitude, so the ratio of oxygen in the air stays the same, but the amount of gases in your lungs decrease.
Explain why changes of state are considered physical transitions and not chemical processes?
This is because when a substance, such as water, is changed to a solid (ice) it keeps its same, original properties! A chemical change involves changing the substance into a completely new substance. Water, on the other hand, can go from a solid, to a liquid, to a gas without changing its properties, only its state!
When a substance changes form but it remains the same substance is it a physical or chemical change?
it would be physical change because physical change is when the substance stays the same
When a substance changes form but it remains the same substance is it a chemical or physical change?
it would be physical change because physical change is when the substance stays the same
Is it a physical or chemical change when a substance changes form but it remains the same substance?
it would be physical change because physical change is when the substance stays the same
Which stays the same when a substance switches from liquid to gas?
During the phase change, the temperature stays the same.
What stays the same in a physical change?
The chemical nature/identity of the substance stays the same when a physical change takes place.
When matter undergoes a physical or chemical change the amount of mass changes or stays the same?
The amount of mass stays the same.
Does the moon change shape in a full orbit?
No - the moon itself stays the same shape. The phases of the moon change as the earth and moon orbit round the sun. The phases are simply the amount of sunlight reflected in relation to the position of the earth's shadow cast on the moon
What is physical changing?
A physical change changes the property of a substance without changing the substance completely. In other words, a physical change is reversible.This change that occurs in the physical property/properties of a substance without altering its composition. A physical change:Possibly canchange withstate of matter (sublimation, decomposition, evaporation, melting, freezing, and condensation).No new material is formed.Possibly can dissolve.Possibly can occur either by increasing or decreasing the temperature.Is reversible.A physical change is any change not involving a change in the substance's chemical identity.a physical change is the color shape taste and smell of a substance.A physical change is where an object changes is size/ shape
What is the substance that undergoes a physical change but always stays the same?
a physical change is totally reversible, i.e, you can get the substance you will get back after some physical process like heating, evaporating, etc. thus the substance actually remains the same.
What happens to the mass of 2 Substance when mixed to form a Solution?
I think it stays the same. I'm trying to figure this out as well. My friend told be it stays the same.
When chewing gum does the volume change?
No, the volume stays the same, the chewing gum just changes its shape/
Does density change if you change the size?
Answer #1:Yes, assuming the mass stays the same.==================================Answer #2:A large amount of a substance has the same density as a small amount of the same substance.A gold nugget has the same density as a gold bar.A tank-car-ful of fresh water has the same density as a glass of fresh water.
