1: STEEL IS THE MOST USED METAL IN THE WORLD
2: LIME JUICE CONTINS CITRIC ACID
3: AIR IS AN EIEMENT
4: ROCK SALT IS THE MIXTURE OF THE COMMON SALT
5: THE MOLECULES IN THE GAS MOVE IN ONLY ONE DIRECTION
6: COMPLETE IT= H_D_R_G_N
7: COMPLETE IT= X_N_N
8: THE SOLUBILITY OF WATER IN GAS IS?