Answer:
chemical change occur when a substance combines with another to form a new substance.
Explanation:
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<span>Nickel
is an element with a mass number of 58.6934 u <u>+</u> 0.0002 u.
It has a symbol of Ni and an atomic number of 28. Nickels are usually used to
make US coins because it is a silvery-while metal. It was Axel Fredrik
Cronstedt who were said to discover Nickel in year 1751. The melting point is
Nickel is 2 651 degree F or equals to 1 455 degree C. It is also said to be
hard and ductile.</span><span>
</span>
C. During a storm, a river is carrying a lot more sediment than during a low flow period
When the guard cell is filled with water and it becomes turgid, the outer wall balloons outward, drawing the inner wall with it and causing the stomate to enlarge.