Because density is the relationship between weight and volume. If you're just increasing volume, making the stuff fluffier, then for each unit of volume the weight will be less.
Let's say you have a cup of cream. If you turn it into whipped cream it'll still weigh the same, but now it won't fit in the cup any more. More volume, same weight - lower density.
The density goes down when the volume goes up.
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.
As the pressure increases, the volume wil decrease.
DecreasesApex (:
The gas pressure in a closed container increases with volume and increased temperature. Likewise, the pressure will decrease with decreased temperature.
It increases.
If volume increases while mass remains the same, the density will decrease.
Density = mass / volume. Therefore, if volume increases and mass doesn't change, density will obviously decrease.
must decrease
The volume of a substance increases when heated, causing a decrease in 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.
density decreases
If density = mass/volume, and your volume increases while mass remains the same... Then the denominator increases which would decrease the density
As the air bubble increases in volume, its mass remains constant. Because the mass remains constant but volume increases, density will decrease.
Density is a characteristic of a given material. Water, for example, has a certain density (which is somewhat dependent upon temperature but let's say that the temperature is constant). It does not matter how much water you have, it will all have the same density. One teaspoon has much less mass, but the same density as an entire ocean.
As gases are heated up, its volume increases, resulting in a decrease of 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.
Yes. This increases its volume, which results in a decrease in its density.