No it's a physical change!
No, this is definitely a physical change, absolutely not a chemical.
Erosion is the process of water softening rock into soil or sand (depending on the type of rock). It is a long process which uses rain and high tides against rock. Overtime, the stone is softened by the water and begins to crack and crumble. This continues until the stone becomes soil or sand.
No, passing tap water through a filter is a physical change, not a chemical change. The filter simply removes impurities and particles from the water, without altering its chemical composition.
Physical
It depends on what is boiling. If you are boiling WATER, then it is NOT a chemical change, it is a physical change (change of state from liquid to gas). If you are cooking food on the stove, a chemical change is occuring. That is, the chemical bonds within the food molecules are actually changing. One way you can tell that it is a chemical change is that you can't "uncook" food, but you can condense steam back into water.
Soaking is not a chemical change, unless contact with water results in a chemical reaction - such as adding sodium to water.
The chemical reaction of water with sodium is a chemical change.
No, spilling water is a physical change, not a chemical change. A chemical change involves a change in the chemical composition of a substance, whereas spilling water only changes its location and physical state.
Calcium reacting with water is a chemical change.
Boiling water is a physical change because it does not change the chemical composition of the water.
No, because the chemical properties of the water do not change.
This is a physical change. The bubbles are pockets of steam which is the same chemical as water, just in a different state.
Mixing water with clay is not a chemical change, as no new substances are formed. It is a physical change, where the clay particles are dispersed in the water but retain their original chemical composition.
Burning is a chemical change but water doesn't burn.
Ocean water is a substance, not a physical or chemical change.
The change of water to steam is a physical change, not a chemical change. In this case, the water molecules are simply changing phase from a liquid to a gas, but the chemical composition of water remains the same.
Mixing salt and water is a physical change, not a chemical change. The salt does not change its chemical composition when it dissolves in water, only its physical state.