no, phosphorus is an element
The image shows four allotropes of phosphorus. All the same pure element, but different interatomic bond patterns. These are physical changes.
Yes
Substance A is likely an element, as it cannot be broken down by a chemical change. Substance Z is likely a compound, as it can be broken down by a chemical change into simpler substances. From this information, it can be concluded that substances A and Z have different chemical compositions and properties.
Chemical Change
These two questions do not represent the same content.
No, a compound can also be broken down through a chemical change. This typically involves a chemical reaction that alters the chemical structure of the compound to create different substances.
Yes
All of the elements of the Periodic Table cannot be broken down into simpler substances.
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.
Yes, ammonia can be broken down by a chemical change. One way to break down ammonia is through a process called decomposition, where it can be broken down into nitrogen and hydrogen gases. This can be achieved through various chemical reactions or by applying heat or using a catalyst.
of course, by the intermediate of chemical reactions
Substance A is likely an element, as it cannot be broken down by a chemical change. Substance Z is likely a compound, as it can be broken down by a chemical change into simpler substances. From this information, it can be concluded that substances A and Z have different chemical compositions and properties.
yes they can
Chemical Change
No. It is an element and fundamentally already as "broken down" as possible.
It is a physical change, the chemical form remain unchanged.
These two questions do not represent the same content.
No, a compound can also be broken down through a chemical change. This typically involves a chemical reaction that alters the chemical structure of the compound to create different substances.