Unit 4 Review

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in chemical bonding.

Front

How many valence electrons does potassium have?

Back

Potassium has 1 valence electron.

Front

What group do halogens belong to in the periodic table?

Back

Halogens belong to Group 17 in the periodic table.

Front

What are the properties of non-metals?

Back

Non-metals are typically dull, brittle, and poor conductors of heat and electricity.

Front

Which metal is commonly used for making foil to pack foodstuff?

Back

Aluminium is commonly used for making foil.

Front

What does it mean for a metal to be ductile?

Back

Ductile means that a metal can be drawn into wires.

Front

What are alkali metals?

Back

Alkali metals are the elements in Group 1 of the periodic table, known for being highly reactive.

Front

What are alkaline earth metals?

Back

Alkaline earth metals are the elements in Group 2 of the periodic table, known for having two valence electrons.

Front

What is a metalloid?

Back

Metalloids are elements that have properties of both metals and non-metals.

Front

What is the significance of the periodic table?

Back

The periodic table organizes elements based on their atomic number and properties, helping predict their behavior.