Valentine's Day-theme counting atoms interactive Google Slides activity. Digital interactive science task cards for Google Slides, Google Classroom, Digital Resource Distance Learning.Students find the total number of atoms in a given chemical expression. Expressions with parentheses included. ❗❗ Instructions: The students go to the first slide and use the present mode. A correct answer gives the next problem and incorrect returns to the same problem.2 challenges with 10 self-checking multiple-c