Periodic table and reactivity

Front

What is the periodic table?

Back

A tabular arrangement of chemical elements, organized by increasing atomic number, electron configuration, and recurring chemical properties.

Front

What are metals?

Back

Elements that are typically shiny, good conductors of heat and electricity, and malleable.

Front

What are nonmetals?

Back

Elements that are usually poor conductors of heat and electricity, and can be gases, liquids, or brittle solids.

Front

What are metalloids?

Back

Elements that have properties of both metals and nonmetals, often used as semiconductors.

Front

What are valence electrons?

Back

Electrons in the outermost shell of an atom that determine its chemical properties and reactivity.

Front

How does the number of valence electrons affect reactivity?

Back

Elements with fewer valence electrons tend to lose them easily, making them more reactive, while those with full outer shells are less reactive.

Front

What is the most reactive group on the periodic table?

Back

Group 1 (alkali metals) is the most reactive group.

Front

What is the least reactive element?

Back

Neon (Ne) is the least reactive element because it has a full outer shell of electrons.

Front

What is the significance of group 17 elements?

Back

Group 17 (halogens) are highly reactive nonmetals that readily form compounds with alkali metals.

Front

What is the trend in reactivity for metals as you move down a group?

Back

Reactivity increases as you move down a group for metals.