6. A student observed a precipitate form during a chemical reaction. Which of the following
did the student most likely observe?

A. Bubbles of gas floated to the top of a
solution.

B. The color of a liquid changed when a solid
was added to it.

C. Steam rose from a flask when a powder
was added to a liquid.

D. A solid sank to the bottom of a container
when two liquids were mixed.

Pls help ASAP! Will give brainliest

Which of the following statements is true? question 4 options: nuclear decay rates vary with the conditions of the reaction, but chemical reaction rates do not. chemical reaction rates vary with the conditions of the reaction, but nuclear decay rates do not. neither chemical reaction rates nor nuclear decay rates vary with the conditions of the reaction. both chemical reaction rates and nuclear decay rates vary with the conditions of the reaction.

What is a metal replacement reaction

Which answer tells the reason the earth’s climate is getting warmer? too many animals are becoming extinct. large glaciers are melting in antarctica. the earth is moving closer to the sun. driving cars gives off gases that trap heat in the atmosphere.