<span>All the processes that physically disintegrate or chemically decompose a rock at or near the earth's surface is called w</span>eathering.
<span>Weathering produces sediment, whereas erosion transfers sediment from place to place.</span>
Answer:
Copper turns green on exposure to air
Explanation:
Liquid water freezes to form ice: Physical change
Reason: Water can melt back when it becomes ice.
Copper turns green on exposure to air: Chemical change
Reason: The copper can not change back from the green state when it turns green.
The answer to your question is THE HUMAN EYE CAN ONLY PERCEIVE A NARROW RANGE OF WAVELENGHTS
One mole of carbon atoms has a mass of exactly 12 g. Because magnesium atoms each have twice the mass of carbon atoms (24Mg compared with 12C), one mole of magnesium has a mass of 24 g. In fact, one mole of any element has a mass in grams that is equal to its relative atomic mass. One mole of iron has a mass of 56 g