Answer:
Classification of elements in groups provide us with a fixed pattern in which the elements change their properties periodically.
Explanation:
Answer:
The principle of uniformitarianism describes the fact that the geological processes used to occur in the past were in the same manner and with the same intensity that as they occur in the present on the planet Earth. Therefore, uniformity in the geological processes exhibit from the unknown and unobservable past to present scenario of Earth. The present is the key to the past is the slogan of the principle of uniformitarianism.
Unsafe to dono because it’s way too high
Answer:
It is A) Calcium
Explanation:
Calcium has an electronic configuration of 2,8,8,2
The features that can be observed from a substance that undergoes a chemical change is that the shape is altered. That is option D.
<h3>What is a chemical change?</h3>
A chemical change is the change in which two or more chemical substances involved in a chemical reaction rearranges their chemical bonds to form a new product.
In the chemical change, the shape of an object can be changed and the object will still remain true to its chemical composition.
Therefore, the features that can be observed from a substance that undergoes a chemical change is that the shape is altered.
Learn more about chemical reaction here:
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