Can someone explain this to me?

The chemical and physical properties of substances are determined by their structure at an atomic scale. What does this mean?

And also

Substances change and new substances are produced by rearranging atoms through atomic interactions and energy transfer. What does this mean?

Can you explain them in simple in terms? I don't understand chemistry. Thanks.

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whowasthatmaskedman · 70-79, M

Think of it like lego.. A few basic building blocks (Electrons , protons , neutrons) fit together to make everything. The join point use something like magnets, some attract some repel, and how they fit can make anything.. Thats way over simple, but it works..