Based on your experience, which reactions are likely to be self-sustaining? check all that apply.
burning gasoline in a car engine
hard-boiling an egg
thrusting a rocket into space

Provide a stepwise curved arrow mechanism that fully explains the outcome of the reaction shown below. oh нао* heat он

Which of the following is an indication that a substance has undergone a chemical change? a. no new product has been formed. b. the color of the substance has not changed. c. the original constitute has not changed. d. the molecular structure has changed.

Give one example of a pure (exact) number and of an estimated (measured) number.