C.) It was Einstein who created quantum of light
ok, here is a sentence for you:
Frost wedging is a process that is an occurrence when ice forms in a tiny crack of a rock and then i breaks slowly melting away and eroding the surface of the rock or mineral etc.
I hope this helps you!
Explanation:
A property which causes change in chemical composition of a substance is known as a chemical property. For example, reactivity, toxicity, combustion etc.
Whereas a property which causes no change in chemical composition of a substance is known as a physical property. For example, mass, volume, density etc.
Sodium is a very reactive metal and it reacts readily with oxygen, water etc. So, when sodium is added to water then occurrence of an orange flame represents its reactivity.
Thus, based on given observation it can be concluded that chemical reaction takes place when sodium is added to water.
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