Answer:
2. That matter is composed of small indestructible particles.
Explanation:
Dalton's atomic theory states:
• Matter is composed of atoms, which are the indestructible building blocks of matter and cannot be destroyed.
• All atoms of an element are identical.
• All atoms of different elements vary in size and mass.
• Compounds are produced through different whole number combinations of atoms.
• A chemical reaction is the rearrangement of atoms in the reactant and product compounds.