this is because water is having its own volume.
when more mass is added
The volume occupied by water will not change, it will remain 11.2cm3 (1ml =1cm3). However, the final volume level will be 11.94cm3, since the silver pellets will displace the same volume of water that it occupies.
Yes there is a change in volume.
Density = mass / volume. So if the volume changes, the density will obviously also change.
Yes , the volume of water will increase if salt is added , as salt is a solute and water is a solvent. When salt is added , it affects the weight of molecules and the liquid itself.
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.
The volume increase, mass does not change.
Because the water molecules moves faster when heated and therefore, the volume expands.
Nothing. The main concept of dissolving something is that it does NOT add to the volume of the liquid. You can just keep chucking the sugar into the water and the volume will not change (the weight WILL!). ...At least not until you have added over 91g, then no more will dissolve at all. If you keep adding sugar, it will float about and collect at the bottom and the volume will increase with every grain added. It's 91g because Glucose (I assume this is the sugar you refer to) has a water solubility of 91g per litre.
Yes.
thermal expansion
Why does copper sulfate change its colour when water is added