What is an ion? a. an atomic or particle with a positive or negative charge b. a compound that contains two elements c. a group of two or more atoms that acts like one atom d. a particle in the nuclues of an atom that has no charge -!

Identify a strong intermolecular force of attraction between an alcohol

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.

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?