Charged particle distributions and correlations in proton-proton collisions measured with the ATLAS detector

We present soft-QCD measurements in proton-proton collisions at $sqrt{s}= 900$ GeV and $sqrt{s}= 7$ TeV recorded with the ATLAS detector at the LHC using a single-arm minimum bias trigger. The charged particle multiplicities, its dependence on transverse momentum and pseudo-rapidity and its correlation with the average transverse momentum will be shown. Moreover, the measurement of the underlying event properties using charged particles only and neutral plus charged particles is discussed. Finally the measurement of the two-particle angular correlations is presented. All the measurements are compared with different Monte Carlo predictions.