Vinegar has a density of 1.01 g/ml and freezes at approximately 2°c (36°f). it has a sour taste and is often used to make pickles. it can also be combined with baking soda to produce carbon dioxide gas. which of the following describes a chemical property of vinegar? a. vinegar has a sour taste. b. vinegar freezes at 2°c. c. vinegar can react with baking soda. d. vinegar has a density of 1.01 g/ml.

A vinegar can react with baking soda.

Explanation:

Chemical change:

The changes, that occur due to change in the composition of a substance and result in a different compound is known as chemical change.

These changes are irreversible

These changes occur due to chemical reactions

These may not be observed with naked eye

Example:

Vinegar and baking soda combine to produce CO₂

Combustion of fuel or wood: that oil or wood convert into energy, CO₂ and ash in case of wood

Boiling of egg: that change the chemical composition of protein in the egg

The reaction of Hydrogen and oxygen:

H₂ (g)  + O₂  (g) > 2H₂O  (l)

Physical Change                                                                                              

The changes that occur only due to change in shape or form but their chemical or internal composition remain unchanged.

These changes were reversible.

They have same chemical property.

These changes can be observed with naked eye.

Example:

Density, taste, boiling points, freezing point, melting point are all physical properties.

the reaction mixture contains some ammonia, plus a lot of unreacted nitrogen and hydrogen. the mixture is cooled and compressed, causing the ammonia gas to condense into a liquid. the liquefied ammonia is separated and removed. the unreacted nitrogen and hydrogen are then recycled back into the reactor .

in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

explanation: