Which of the following volumes is the smallest? a) one microliter b)one deciliter d)one liter c)one milliliter

The correct answer option is a) one microliter.

Explanation:

We are given four different units of measuring the volume of a liquid and we are to determine whether which of them is the smallest of all.

Comparing the given values with 1 liter quantity:

a) 1 microliter - it equals to 0.000001 liters

b) one deciliter - it equals to 0.1 liter

c) one liter - 1 liter

d) one milliliter - it equals to 0.001 liter

So the smallest value is one microliter.

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.