Question

How did modern scientists experiment with Van Gogh's paints to determine their chemical reactions?

1. They used X-ray analysis.
2. They used litmus testing.
3. They burned the paint to examine what elements were left after the chromium was burned off.
4. They studied the density of modern yellow paint to that of 100-year-old paint.

Answer 1

Answer:They used X-ray analysis

Step-by-step explanation:

It’s in the text

Answer 2

I think the answer is A - they used X-ray analysis.

Step-by-step explanation: