Please real answers only , 100 pts and brainliest please no wrong or fake answers

In what environment would mineral formation caused by high pressures and high temperatures most likely occur?

When the chemicals iron sulfide (fes) and hydrochloric acid (hcl) are combined, bubbles appear from the mixture. 1. does the appearance of bubbles indicate a physical or chemical change? 2. why do the bubbles indicate this change? 3. what property is this?

What type of radiation is lead emitting in the following equation? alpha particles beta particles gamma rays