My friend is right because ice is a solid and all solids have their particles in fixed position.
There are three states of matter;
The particles of gases are extremely free and do not interact with each other. As a result of this, a gas does not have a definite shape or volume.
Liquids have a significant degree of intermolecular forces acting between their molecules hence they have a definite volume but no fixed shape.
Solids have a fixed shape and volume because solid particles are held in fixed positions by strong intermolecular interactions.
Ice is a solid, it has a fixed shape because the particles are held in fixed positions therefore they are not moving.
Learn more: https://brainly.com/question/9402776