In the present study, volumetric and acoustic methods have been used to interpret intermolecular interactions of amino acids (glycine, L-alanine, and L-valine) in aqueous solutions of an ionic liquid, 1-methyl imidazolium chloride [mim][Cl] as a function of temperature. The density, rho and speed of sound, c of glycine, L-alanine and L-valine in aqueous 1-methyl imidazolium chloride solutions have been measured in the temperature interval T = (288.15 to 308.15) K and atmospheric pressure. Then apparent molar volume (V-phi) and apparent molar adiabatic compressibility (K-phi,K-s) of these mixtures at the investigated temperatures have been calculated. The standard partial molar volumes (V-phi,s(0)), standard partial molar volumes of transfer (Delta V-phi(0)), standard partial molar adiabatic compressibility (K-phi,s(0)), and standard partial molar adiabatic compressibility (Delta K-phi,s(0)) of transfer have also been determined for these amino acid solutions. The results have been discussed in terms of interactions existing among solute and solvent. Also, the temperature dependence of the apparent molar volume has been used to calculate apparent molar expansivity phi(0)(E) and Hepler's constant (partial derivative V-2(phi)0/partial derivative T-2), to verify the conclusions obtained from volumetric and speed of sound properties. (C) 2015 Elsevier Ltd. All rights reserved.