Atomic Structure, Periodic Trends, and Chemical Compounds

Vocabulary flashcards covering subatomic particle calculations, periodic group trends, and chemical formula element counts from the chemistry worksheet.

$$CaCO_3$$

A chemical compound (calcium carbonate) containing the elements calcium ($\text{Ca}$), carbon ($\text{C}$), and oxygen ($\text{O}$), consisting of $1$ calcium atom, $1$ carbon atom, and $3$ oxygen atoms.

$$CO_2$$

A chemical compound (carbon dioxide) containing the elements carbon ($\text{C}$) and oxygen ($\text{O}$), consisting of $1$ carbon atom and $2$ oxygen atoms.

$$CuSO_4$$

A chemical compound (copper sulfate) containing the elements copper ($\text{Cu}$), sulfur ($\text{S}$), and oxygen ($\text{O}$), consisting of $1$ copper atom, $1$ sulfur atom, and $4$ oxygen atoms.

$$C_6H_{12}O_6$$

A chemical compound (glucose) containing the elements carbon ($\text{C}$), hydrogen ($\text{H}$), and oxygen ($\text{O}$), consisting of $6$ carbon atoms, $12$ hydrogen atoms, and $6$ oxygen atoms.

$$HCl$$

A chemical compound (hydrogen chloride / hydrochloric acid) containing the elements hydrogen ($\text{H}$) and chlorine ($\text{Cl}$), consisting of $1$ hydrogen atom and $1$ chlorine atom.

$$NaHCO_3$$

A chemical compound (sodium hydrogen carbonate / sodium bicarbonate) containing the elements sodium ($\text{Na}$), hydrogen ($\text{H}$), carbon ($\text{C}$), and oxygen ($\text{O}$), consisting of $1$ sodium atom, $1$ hydrogen atom, $1$ carbon atom, and $3$ oxygen atoms.

$$NaCl$$

A chemical compound (sodium chloride) containing the elements sodium ($\text{Na}$) and chlorine ($\text{Cl}$), consisting of $1$ sodium atom and $1$ chlorine atom.

$$NaOH$$

A chemical compound (sodium hydroxide) containing the elements sodium ($\text{Na}$), oxygen ($\text{O}$), and hydrogen ($\text{H}$), consisting of $1$ sodium atom, $1$ oxygen atom, and $1$ hydrogen atom.

$$H_2O$$

A chemical compound (water) containing the elements hydrogen ($\text{H}$) and oxygen ($\text{O}$), consisting of $2$ hydrogen atoms and $1$ oxygen atom.

$$^{14}_{7}\text{N}$$

The element nitrogen with an atomic number of $7$ and a mass number of $14$, containing $7$ protons, $7$ electrons, and $7$ neutrons.

$$^{28}_{14}\text{Si}$$

The element silicon with an atomic number of $14$ and a mass number of $28$, containing $14$ protons, $14$ electrons, and $14$ neutrons.

$$^{85}_{37}\text{Rb}$$

The element rubidium with an atomic number of $37$ and a mass number of $85$, containing $37$ protons, $37$ electrons, and $48$ neutrons.

$$^{39}_{19}\text{K}$$

The element potassium with an atomic number of $19$ and a mass number of $39$, containing $19$ protons, $19$ electrons, and $20$ neutrons.

$$^{119}_{50}\text{Sn}$$

The element tin with an atomic number of $50$ and a mass number of $119$, containing $50$ protons, $50$ electrons, and $69$ neutrons.

$$^{84}_{36}\text{Kr}$$

The element krypton with an atomic number of $36$ and a mass number of $84$, containing $36$ protons, $36$ electrons, and $48$ neutrons.

Group 1 Reactivity Trend

The trend where the reactivity of alkali metals (lithium, sodium, potassium, rubidium, caesium, francium) increases as you move down the group.

Group 7 Reactivity Trend

The trend where the reactivity of halogens (fluorine, chlorine, bromine, iodine, astatine) decreases as you move down the group.

Periodic Group Shell Trend

The trend where the total number of occupied electron shells increases by $1$ for each period as you move down any group.