Yes. Unless the solid is either melting (and turning to liquid) or subliming (and turning to gas), it has fixed mass. Even if it is undergoing a transformation, the mass of substance is always constant, it may just change it's form or location...
Titanium is a solid under normal conditions.
Titanium is a solid under normal conditions.
Under normal conditions it is a solid.
Starch is a solid, under normal conditions.
Under normal conditions, aluminum is a solid.
Under normal conditions, platinum is a solid.
No, under normal conditions it is a crystalline solid.
It was thought to be a gas but may be a solid under normal conditions
No, sodium acetate is a solid under normal conditions.
Under normal conditions boron is a solid. It melts at 20760C and boils at 39270C
Under normal conditions of temperature and pressure the mineral Quartz is a crystalline solid.
Au, gold, is a solid under normal conditions, it melts at 1064 0C