no its not its not a statment
Is it flammable liquid and flammablle solid
The OH on the lower right of lysine and the H on the lower left of valine combine to form a molecule of water (H2O) and detach in a process known as a dehydration reaction when the two amino acids bond. The C on the right side of lysine then single bonds with the N on the left side of valine. This bond is termed a peptide bond. All the other bonds remain unchanged.
What determines the chemical properties is : color, hardness, luster, crystal forms, density, and cleavage.
Sometimes you mix different substances and you don't make new substances but mostly of the time you do make new substances , so the answer is chemical change.