Classify each of the compounds as an ionic compound, a covalent compound or an acid. a. BaCl2d. CH4b. MnO2e. H2S*c. H3AsO4f. CH3OH

a. BaCl2 is ionic compound.

b. CH4 is covalent compound.

b. MnO2 is ionic compound.

e. H2S is covalent compound.

c. H3AsO4 is ionic compound.

f. CH3OH is covalent compound.

Explanation:

BaCl2, MnO2 and H3AsO4 are ionic compounds due to the presence of ionic bond between the atoms while on the other hand, CH4, H2S and CH3OH are covalent compounds due to the presence of covalent bond between their atoms. In covalent bonds, sharing of electrons occur whereas in ionic bonds, complete transfer of electrons occur from one atom to another atom.

answer : one can design an experiment using a liquid and an additive that can be added to the liquid and observe the chemical changes in the reaction species.

one would need a beaker which is filled with a known amount of the liquid in which thermometer is placed to measure the temperature changes; after addition of the additive to the liquid solution one can note down the temperature change and find whether the reaction is endothermic or exothermic in nature. by subtracting the initial temperature value with the final temperature one can find the temperature changes.

various combinations of liquid and additive can be used. liquid in this case can be a known quantity of water and additives can be epsom salt or without epsom salt the experiment can be conducted to notice the changes. water and ice, hydrogen peroxide and dry yeast, vinegar and baking soda,etc.

i believe the answer is three water molecules