Is this a chemical reaction? Explain your reasoning. (Will give brainliest)

Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.

Chemical bonds result from the interaction of the from two or more atoms. a. protons b. electrons c. neutrons d. nuclei

What makes up a film badge? layers of photographic film covered in black paper. an electrolyte paste spread across a plastic sheet. a thin film of salts and other chemicals on clear acetate. a panel of photographic film exposed to the air. ✓