Question

Hematite is a naturally occurring mineral and a common form of iron ore. The following statements describe physical and chemical changes occurring to hematite. Which statement describes a chemical change? A. The hematite particles separate from each other but remain the same substance. B. The hematite particles rearrange to form a new substance. C. The hematite particles are mixed with particles of a different substance. D. The hematite particles vibrate more quickly when they are heated. E. The hematite particles are moved from one location to another location.

Answer 1

Answer : Option B) The hematite particles rearrange to form a new substance.

Explanation :

Hematite particles when gets rearranged to form a new substance, is an example of a chemical change.

As a chemical changes is usually a change where a substance undergoes a chemical change and forms a new substance; which cannot be easily reversed into reactants by any simple physical methods.

In this example the hematite ore forms a new substance by an irreversible chemical change.

Answer 2

Physical and Chemical changes occurring to Hematite - Option B

The Hematite particles rearrange to form a new substance. It describes a physical and chemical change occuring to Hemtite. When these particles get rearranged to produce a new substance, such a change is known as chemical change.

Chemical changes are often a variation in which an object changes chemically and become into a new species. Such a species cannot be reversed into reactants through any simple physical methods. Hematite particles form a new substance by an irreversible chemical change which cannot form reactants by-products.