Paint and gasoline mix is what changes

is a physical change, gasoline is an organic solvent that dissolves paint.

Physical change: It refers to the fact that although the state of matter has changed, generally speaking, the composition of the substance itself has not changed. For example:

Changes in position, volume, shape, temperature, pressure, and conversion between gaseous, liquid, and solid states. There are also the interaction between matter and electromagnetic fields, the interaction between light and matter, and the interaction and transformation between microscopic particles (electrons, atomic nuclei, elementary particles, etc.), all of which are physical changes.

Dissolution: Broadly speaking, the process by which more than two or more substances are mixed to form a homogeneous phase in a molecular state is called dissolution. Whereas, dissolution in the narrow sense refers to the process by which a liquid produces a chemical reaction with a solid, liquid or gas to make it a homogeneous phase in the molecular state, which is called dissolution.

The process by which one substance (solute) is dispersed in another substance (solvent) to become a solution. For example, table salt or sucrose is dissolved in water to form an aqueous solution. A solution is not necessarily a liquid, it can be a solid, a liquid, a gas.

For example, a homogeneous alloy and air can be called a solution. When two substances are miscible with each other, the substance with the highest mass is generally called a solvent (if there is water in it, it is generally customary to call water a solvent).

It's a chemical change! Because gas oil is added to the paint, the gas oil molecules will decompose the paint molecules, thus achieving the effect of dilution!

Gasoline is a mixture.

The main components of gasoline are C4 and C12 aliphatic hydrocarbons and cyclic hydrocarbons, and contain small amounts of aromatic hydrocarbons and sulfides. Basically a hydrocarbon (alkane) that is refined from petroleum.

The products from petroleum fractionation are obtained in the order of the hydrocarbon base volume from short to long (high to low evaporation), probably natural gas, lighter gas, liquefied petroleum gas, gasoline, kerosene, diesel oil, heavy oil, asphalt, etc., and of course some other chemical products such as alkene, benzene, etc.

Gasoline is a large category of oil products. A mixture of complex hydrocarbons (the number of carbon atoms is about 4 12).

Properties of Gasoline:

Colorless to pale yellow easy-flowing liquid. The boiling point ranges from about 30 to 205 at the initial distillation point, and the content in the air is 74 123g m3 when exposed to fire**. The main components are four- to twelve-carbon hydrocarbons. Flammability.

The calorific value of gasoline is about 44000kJ kg. The calorific value of fuel refers to the amount of heat produced after 1kg of fuel has been completely combusted.

It is not made up of one substance, but is a mixture of many hydrocarbons.

Definition. this paragraph].

A mixture is made up of two or more substances [consisting of two or more.

Pure substances (elemental or compounds)] — mixed. There is no fixed composition and properties, and each element or compound retains its original properties. Mixtures can be physically separated from the substances. It is not chemically synthesized.

Such as: air containing oxygen, nitrogen, noble gases, carbon dioxide and other gases, petroleum containing various organic substances (**), natural water, solutions, muddy water, milk, alloys, lime fuel (coal, oil, natural gas), limestone ......

Classify. this paragraph].

1.Mechanical mixtures.

2.The composition is a relatively fixed mixture.

3.Homogeneous fixed mixture.