Hunting the Elements

Front

How many unique substances (elements) are there?

Back

118

Front

75% of the elements are _____________________

Back

metals

Front

The number of _______________ determines what kind of element the atom is.

Back

protons

Front

Metals are shiny, malleable materials that conduct

Back

electricity

Front

Dmitri ________________________ , the grandfather of the periodic table, came up with a chart to organize all of the elements.

Back

Mendeleev

Front

The group on the far right of the table, the ____________ gases, are unwilling to react with other elements.

Back

noble

Front

Protons may determine the identity of an element, but _______________ rule its reactivity

Back

electrons

Front

The column just before the stable noble gases, are called the ____________________ which are craving just one electron in their outer shell.

Back

halogens

Front

Every time atoms form a new bond, the reaction releases __________________

Back

energy

Front

This group is in the first column. They all have full shells, plus one extra electron they desperately want to get rid of.

Back

alkali metals