Alyana left a pair of scissors outside her house for a long time. One day, she found the scissors which has rusted. What evidence shows that a chemical reaction has taken place.
A. The scissors turned orange.
B. It is dirty.
C. The sun has warmed it.
D. The scissors became hard to use.
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Answer:
A. The scissors turned orange.
Explanation:
Scissors are mainly produced using metals that contains iron, and irons are prone to rusting whenever they are exposed to liquids especially water. Since Alyana, left the pair of scissors outside her house for a long time, we can assume that it was exposed to different liquids that can be found outside, like rains. The orange color was a result of chemical change in the iron element in the scissor, it was oxidized.