Which common substance is a mixture?
salt
air
sugar
baking soda
water

the following correct answer is air.

Explanation:

Air is considered a mixture because of thefollowing reasonsheat and light, etc, are are neither given out nor observedwhen airis prepared by mixing therequired proportion of oxygen , nitrogen ,carbon dioxide, argon,water vapour etc.

hope this

explanation:

covalent bonds

consist of pairs of electrons shared by two atoms, and bind the atoms to fixed orientation and requre high energies to break them

ionic bonds

when two atoms differ considerably in their electronegativity, then one of the atoms will lose its electron to the other atom. this results in a positively charged ion(cation) and a negatively charged ion (anion)

sry but any answer choices