Atoms

Photo Journal

Lithium (Li⁺)

Copper (Cu²⁺)

Sodium (Na⁺)

For our first experiment this year, we burned different ionic matters to test what color they'd burn off when lit. This taught us about the movement of electrons and energy levels.

In this unit we learned one of the key skills used in chemistry. We learned how to convert grams to moles and how to find how many grams are in x moles of any element and visa versa.

For the procedure, we heated up hydrated MgSO₄ and calculated the moles of water lost after we heated the sample. To the left is the dehydrated sample after it had been placed under the fire.

Here, we witnessed the movement of electrons yet again. We took a battery to light steel wool on fire and measured the mass of the wool before and after, calculating the moles of water lost when the wool is heated.

Learning Analysis

This unit was all about atoms, atomic structure and just being familiar with subatomic particles overall. I really understand mole conversions and I feel confident doing all different types of conversions. I feel as if I have a firm grasp on identifying all the different types of an atom as well as being confident when finding protons, neutrons and electrons given only one fact about the subatomic particle. I have a basic understanding of energy levels, but I wish I knew more in depth about them because they seem like such a vital part in an atom's ability to react with other elements.