Periodic Table Flashcard

Front

Why is hydrogen placed above Group 1 in the periodic table?

Back

Like atoms of Group 1 metals, hydrogen atoms have only one electron in their outer level.

Front

Which element has electrons in the third energy level?

Back

Aluminum.

Front

What is the name of the top row of the two lines of elements found at the bottom of the periodic table?

Back

Lanthanides.

Front

What is a characteristic of metals?

Back

Metals are usually good conductors and shiny/lustrous.

Front

What is the name of the elements in groups 3-12 of the periodic table?

Back

Transition Metals.

Front

What are the elements in Group 1 of the periodic table called?

Back

Alkali Metals.

Front

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

Back

Reactivity increases as you move down the group.

Front

What are non-metals typically characterized by?

Back

Non-metals are usually poor conductors of heat and electricity.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What is the significance of the periodic table's arrangement?

Back

Elements are arranged by increasing atomic number and similar chemical properties.