29 pointss

label these as either
element
compound
mixture of elements
mixture of compounds
mixture of elements and compounds

The Label these as either element, compound, mixture of elements, mixture of compounds, mixture of elements and compounds, are as follows.

         10. mixture of elements and compounds

         11. compounds

         12. mixture of compounds

         13. mixture of compounds

         14. mixture of compounds

         15. mixture of compounds

An element is a pure substance that cannot be broken down into anything simpler. They contain the same amount of atoms in their nuclei. They cannot be broken down by a chemical process.

A compound consists of two or more elements that are chemically combined in nature.

From the given diagrams, the white circles represent the elements and when combined with a dark circle, they become a compound.

Therefore, by looking at the diagrams carefully, we can now understand the classification of element, compound, or mixture of both.

Learn more about elements here:

link

the potential energy of the reactants is 200j.

from the energy diagram, the energy of the product formed is 350j; this means that, this reaction is an endothermic reaction, because it absorbs energy from its environment.