Element Properties Phenomena Introduction
PeriodicTrends3.MOVPhenomena Introduction
After looking for patterns in the properties of the cards, students came to realize the chemical properties of the atoms repeats every eight elements, and can be organized by creating a new row every time the properties repeat. This can also be seen in the picture below.
How Do We Think About This?
Background Knowledge:
All of these substances are elements, which means that are made of atoms (not molecules)
Different elements are made of different atoms but the all of the atoms of the same element are the same
The properties of an element must be related to the atoms that make the element
For example: Elements with low melting points must have atoms with weaker forces between the atoms. That is why less particle speed / less temperature is needed to make the atoms disconnect and change from solid to liquid.
Driving Questions:
If each element has different properties, what is different about their atoms?
Some elements have very similar properties, what is the same about their atoms?
How can you learn anything about atoms if you can't see them?