When baking soda and vinegar react, the surface bubbles. what does this most likely indicate?

a: a chemical change, because a precipitate is being formed
b: a chemical change, because a gas is being formed
c: a non-chemical change, because a precipitate is being formed
d: a non-chemical change, because a gas is being formed

The correct answer is B: a chemical change, because a gas is being formed.

Explanation:

The chemical equation of baking Soda reacting with Vinegar is:

CH3COOH + NaHCO3 = CH3COONa + CO2 + H2O

As you can see in the process CO2 ( carbon dioxide ) is being released. This is a chemical change that causes a gas being formed  

B: a chemical change, because a gas is being formed

Other indicators of a chemical reaction include;

Therefore, a reaction between baking soda and vinegar is an example of a chemical reaction ,due to the production of bubbles which indicates formation of a gas.

prolly a beacuse the momentuem the car has increases while going down hill

adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.