SUBSTÀNCIES, MESCLES I DISSOLUCIONS

Totes les preguntes són obligatòries, però si contestes mal descompten punts, pensa bé abans de contestar.
    This is a required question
    This is a required question
    This is a required question
    This is a required question
    This is a required question
    This is a required question
    This is a required question
    This is a required question
    This is a required question
    This is a required question
    Aigua i alcohol
    Sorra amb llimadures de ferro
    La polpa d’un suc de taronja
    Aigua i oli
    Aigua i sucre
    Please enter one response per row
    This is a required question
    This is a required question
    This is a required question