These two questions do not represent the same content.
Yes
Chemical Change
NO!!!!! It is an element in its own right. Ylou will find it in ther Periodic Table.
The correct answer would be Ammonia
food being broken down by enzymes
Hexane is a compound. All chemical compounds can be broken down by chemical change (chemical reactions of many types) - not only hexane. All the other choices are elements which cannot be broken down by chemical changes.
No. It is an element and fundamentally already as "broken down" as possible.
Yes
All of the elements of the Periodic Table cannot be broken down into simpler substances.
Tungsten is an element. It has chemical symbol W. An element is a pure substance that cannot be further broken down into simpler substances through chemical means. A compound, on the other hand, is a substance that is composed of two or more elements that are chemically combined.
of course, by the intermediate of chemical reactions
No. Sodium is an element and elements cannot be broken down (decomposed) by a chemical change.
yes they can
Tungsten is an element. It has chemical symbol W. An element is a pure substance that cannot be further broken down into simpler substances through chemical means. A compound, on the other hand, is a substance that is composed of two or more elements that are chemically combined.
Chemical Change
NO!!!!! It is an element in its own right. Ylou will find it in ther Periodic Table.
The correct answer would be Ammonia