Review: Periodic table

Front

What is an alkali metal?

Back

Alkali metals are elements found in Group 1 of the periodic table. They are highly reactive and include lithium, sodium, potassium, rubidium, cesium, and francium.

Front

Which element is an example of an alkali metal?

Back

Sodium (Na) is an example of an alkali metal.

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in forming bonds with other atoms.

Front

How many valence electrons does an element in Group 14 have?

Back

An element in Group 14 has 4 valence electrons.

Front

How many valence electrons does an element in Group 15 have?

Back

An element in Group 15 has 5 valence electrons.

Front

What is the atomic number of Copper (Cu)?

Back

The atomic number of Copper (Cu) is 29.

Front

How do you calculate the number of neutrons in an atom?

Back

To calculate the number of neutrons, subtract the atomic number from the atomic mass (rounded to the nearest whole number).

Front

What family does Beryllium belong to?

Back

Beryllium belongs to the Alkaline Earth metals family.

Front

What are the properties of alkaline earth metals?

Back

Alkaline earth metals are shiny, silvery-white, and somewhat reactive at standard temperature and pressure. They include beryllium, magnesium, calcium, strontium, barium, and radium.

Front

What is the significance of the periodic table?

Back

The periodic table organizes elements based on their atomic number, electron configuration, and recurring chemical properties.