Arock is dropped into 15 ml of water. it displaces 10 ml. the volume of the rock is: 5 ml 10 ml 15 ml 25 ml

10mL. Take the new volume (25 because it started at 15 and went up 10) and subtract the original (15)

The answer is 10 mL

Explanation:

The volume of the stone is defined as the difference between the final volume and the initial volume:

Vrock = Vfinal - Vinitial

Vrock = ?

Vfinal = 15 + 10 = 25 mL

Vinitial = 15 mL

replacing values:

Vrock = 25 - 15 = 10 mL

answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e

1. they vary with a higher number because boiling is way hotter than melting