Which of these substances is an acid?

Which of these are oxidation-reduction reactions? I. 3H2 + N2 → 2NH3 II. Cu2O + C → 2Cu + CO III. Fe2O3 + 3CO → 2Fe + CO2 IV. 2K + Br2 → 2KBr

Which of these statements about liquids is/are correct? I. Increased molecular motion results in increased rate of evaporation. II. Liquids take the shape of their container. III. Liquids have relatively low compressibility compared to gases.

Which substance is reduced in this redox equation? ​ HF + Cl2 → F2 + HCl

During oxidation-reduction reactions, the substance that loses electrons is _____and the substance that gains electrons is _____.

Which of these are oxidation-reduction reactions? I. 3H2 + N2 → 2NH3 II. Cu2O + C → 2Cu + CO III. Fe2O3 + 3CO → 2Fe + CO2 IV. 2K + Br2 → 2KBr

Which of these substances has/have the lowest boiling point?

Which of these occur(s) during oxidation? I. Gaining electrons II. Losing hydrogen III. Losing oxygen

Which of these is correctly associated with the cathode? I. Electrode with a positive charge II. Electrode at which a substance loses electrons III. Electrode at which reduction occurs

During oxidation-reduction reactions, the substance that loses electrons is _____and the substance that gains electrons is _____.