THIS IS VERY URGENT!! WILL MARK BRAINLIEST ASAP! PLEASE HELP ME! (Answer both questions.)

Q1= C

Q2= Ice melts when heat energy causes the molecules to move faster, breaking the hydrogen bonds between molecules to form liquid water. ... This is why an ice cube melts more quickly on the outside and retains its coldness and solidity longer at the center: melting is a cooling process.

Explanation:

Mine was 1st!

C. At first , the water was solid. Then the water was liquid

Explanation:

The water was first ice, which is a solid.

Then it was water, this is a liquid

This means it turned from solid to liquid. Making the Answer C.

Hope you learned something. :) and STAY SAFE !

it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.