Tiny particles are microscopic objects that cannot be seen with the naked eye. The crossword solutions for this term include ATOMS (5 letters), ions (4 letters), MOTES (5 letters), cells (5 letters), SPECKS (6 letters), and BITS (4 letters). ATOMS are the smallest particles of matter that make up all elements. Ions are ATOMS that have gained or lost electrons, giving them a positive or negative charge. MOTES are small particles of dust or dirt. Cells are the basic structural and functional units of living organisms. SPECKS are very small spots or particles. BITS are the smallest unit of computer information.