Identify the type of phase change described in each process. Molten aluminum poured into a mold cools to form a solid object. A block of dry ice gradually becomes foglike at room temperature. A soldering iron prepares liquid solder from solid metal. The cap is left off a bottle of acetone and the smell fills the room. A scoop of ice cream begins to drip in the hot sun. A drop of mercury on the lab bench disappears over time. Beads of water form on a cold drinking glass.

43.452

step-by-step explanation:

284 times .153 = 43.452

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.