What is the outcome of all chemical changes when two substances are combined? A new substance forms with identical properties.
The two substances release an odor.
The two substances change color.
A new substance forms with different properties.

In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al

Harry lives in a city, and he has a lung condition known as asthma. on certain days, harry has to stay inside because pollutants in the air make it difficult for him to breathe. which of these pollution sources are nonpoint sources that might bother harry if he goes outside? choose the two that apply.

Pls ill give u brainliest which of the following is true about science? 1. political conditions are unable to influence it. 2. economic concerns may prevent it from solving problems.