Question

the scientific method is *
a checklist of steps for experimentation
a summary or equation that has been repeated endlessly with experimentation
a long explanation of how things work that has been tested again and again
a changeable guideline of steps for experimentation

chemical reactions can be reversible *
true
false

Explanation:

The scientific method is a flexible set of steps for experimentation that can be adjusted based on the nature of the study. Chemical reactions can be reversible, where the products can react to form the original reactants under certain conditions.

Answer:

1. D. A changeable guideline of steps for experimentation
2. A. True