Yes.
Yes there is a change in volume.
this is because water is having its own volume.
Density = mass / volume. So if the volume changes, the density will obviously also change.
In general, yes, but lots of things may cause its volume to change. The volume will change if temperature or pressure change, or if something dissolves in the water. Volume may also decrease by evaporation.
To calculate the water difference when the density changes, you would need to account for the change in volume due to the density change. Use the formula: Difference in water volume = Original water volume / Original water density - Original water volume / New water density. Multiply this difference in volume by the new water density to obtain the actual water difference.
The volume increase, mass does not change.
mass and volume
I think it is the volume displacement. When you put an object into a container with a known volume of water, the water will rise, and that change of volume is the volume of the object you introduced into the container.
If a substance undergoes a chemical change, its properties change. For example, water, when heated turns into a gas which has a higher volume.
Yes, water has a definite volume. It takes up a specific amount of space, which is why you can measure it in liters or milliliters. The volume of water can change depending on its temperature and pressure, but it will always have a definite volume at any given time.
One way to measure the volume of an oddly shaped object is by using the water displacement method. Fill a container with a known volume of water, then submerge the object in the water and measure the change in water level - this change in volume is equal to the volume of the object.
Since the salt becomes part of the water, and doesn't take up space in the water, the water level doesn't change.