Mixtures occur when two or more materials are combined and each material keeps its own properties. all of the following are mixtures except

a)
salad

b)
pizza

c)
water

d)
chocolate milk

Option (C) is the correct answer.

Explanation:

When two or more substances combine together then they result in the formation of mixture.

Unlike chemical substances, mixtures can be easily separated through physical means.

For example, mixtures can be separated by filtration, distillation etc.

Therefore, out of the given options, water is not a mixture because in water hydrogen and oxygen atoms are chemically bonded together by sharing of electrons.

note: the given question is incomplete.

complete question is given below.

which is an example of kinetic energy?

a. the energy stored in ethanol  

b. a hockey puck sliding across the ice  

c. a compressed spring  

d. a ball sitting at the top of a ramp

solution: the kinetic energy is the energy posses by the virtue of the motion of the object.

in the given options, a, c and d are the example of potential energy because it is the energy posses by the virtue of the rest of the object. but option b has the kinetic energy as the object is in motion.

hence, a hockey puck sliding across the ice   is the apex example of kinetic energy.

so, the option (b) a hockey puck sliding across the ice   is the correct option.