I believe it's the space between the molecules that make up the substance that changes, as well as their shape and how they bond together.
When there's more space between the molecules, then the substance expands, and when there is less space between them it contracts.
Certain conditions can cause a substance to change the way the molecules bind together. For example, water expands when frozen - when it's liquid, the molecules are close together, but when frozen, the shape of the molecule changes and it can't bunch together as closely, so it takes more space, but the substance still has exactly the same amount of mass, or "stuff", as before.
Density will only stay the same if they decrease in the same proportion. And that is because definition of density is the quotient of the mass divided by the volume.
If you have 10 mass units and they occupy 20 volume units and you reduce both so you have 8 mass units and 16 volume units the quotient will remain the same:
10 / 20 = 8 / 16 = 0.50 the density of 0.50 remains constant.
If mass or volume is changed, the density (mass per volume) will also change.
A decrease in density would indicate a reduction in mass relative to the volume. If the mass decreases but the volume remains the same or increases, then the density would decrease.
Density is mass / volume. Therefore, when mass decreases, density will also decrease.Density is mass / volume. Therefore, when mass decreases, density will also decrease.Density is mass / volume. Therefore, when mass decreases, density will also decrease.Density is mass / volume. Therefore, when mass decreases, density will also decrease.
If the volume remains the same, the density will increase in direct proportion to the increase in mass.
If density = mass/volume, and your volume increases while mass remains the same... Then the denominator increases which would decrease the density
Depends on the other conditions. If the volume remains constant, the density will remain the same (but the pressure will increase). If the pressure remains constant, the volume will increase - and therefore the density (mass / volume) will decrease.
Density = mass / volume, so if you decrease the mass, you'll hve less density.
A decrease in density would indicate a reduction in mass relative to the volume. If the mass decreases but the volume remains the same or increases, then the density would decrease.
With constant mass, a decrease in volume will increase the the density. Conversely, an increase in volume will decrease the density.
A decrease in density would indicate a reduction in mass relative to the volume. If the mass decreases but the volume remains the same or increases, then the density would decrease.
The density becomes lower: Density is defined as mass/volume, and if mass decreases while volume remains the same, the quotient must decrease.
Density is mass / volume. Therefore, when mass decreases, density will also decrease.Density is mass / volume. Therefore, when mass decreases, density will also decrease.Density is mass / volume. Therefore, when mass decreases, density will also decrease.Density is mass / volume. Therefore, when mass decreases, density will also decrease.
If volume increases while mass remains the same, the density will decrease.
Assuming you are talking about the same thing, this can be shown through the density equation: Mass = Density by volume. Assuming density stays the same, if mass decreases, volume should proportionally decrease
density decreases
If the volume remains the same, the density will increase in direct proportion to the increase in mass.
By squeezing the foam you are decreasing its volume, whereas its mass remains roughly the same. Therefor, as density is mass/volume, a decrease in volume results in and increase in density.
The mass will decrease as well. There is a formula for calculating said change, M(mass) = D(density) x V(volume).So if the volume were to remain constant and the density were to decrease, then the result would be smaller, as I previously stated above.