Question

Paige received two 10 mL samples of unknown liquids from her teacher. She combined the substances according to her instructions and recorded the following observations:

1. When the two colorless liquids combined, the color changed to purple.
2. The volume of the combined liquids was 20 mL.
3. The temperature of the liquids rose 10°C after they were combined.
4. The density of the combined liquids was 1.7 g/mL.

Based on her observations, Paige concluded that a chemical reaction took place. Which of her observations support her conclusion?
A.
1, 2, and 3 only
B.
1 only
C.
1 and 3 only
D.
3 and 4 only

Answer 1

I think it is C PLZ MARK AS BRAINLIST

Answer 2

Answer: it’s C

Explanation: