Answer:
A
Explanation:
A chemical change happens when one chemical substance is transformed into one or more different things , such as when iron becomes rust so
B: Acids turn the indicator red, pink, orange, and yellow, while bases turn it green based on what it reactions with or comes in contact with so b is maybe
c is wrong
and d a physical change, will technically yes and no there should have not been a smell afterwards so the only really choose that makes sense here is A
The process by which ice widens and deepens cracks in rock is called Ice welding.
The earth is divided into "spheres", each with its own properties and characteristics. The sphere containing all of the solid ground and layers of the earth is known as the lithosphere (or geosphere).
Other spheres of the earth are the hydrosphere, the cryosphere, and the atmosphere.
Answer:
Explanation:
The relative atomic mass of an element is a weighted average of the masses of the atoms of the isotopes - because if there is much more of one isotope then that will influence the average mass much more than the less abundant isotope will.
