Investigation #3 Flashcard: Coulomb's Law, Electrons, Properties

Front

What are metalloids?

Back

Elements that have properties of both metals and nonmetals, typically found along the zig-zag line on the periodic table.

Front

What is the significance of core and valence electrons?

Back

Core electrons are the inner electrons that are not involved in bonding, while valence electrons are the outermost electrons that participate in chemical reactions.

Front

What was Mendeleev's contribution to the periodic table?

Back

He organized elements by their properties and predicted the existence of undiscovered elements.

Front

What is an alkali metal?

Back

A group of highly reactive metals found in Group 1 of the periodic table, such as sodium and potassium.

Front

What are alkaline-earth metals?

Back

Elements in Group 2 of the periodic table that are less reactive than alkali metals and have two valence electrons.

Front

How do you determine the number of valence electrons in an element?

Back

The number of valence electrons corresponds to the group number of the element in the periodic table.

Front

What is the periodic law?

Back

The properties of elements are a periodic function of their atomic numbers.

Front

What is the difference between metals and nonmetals?

Back

Metals are typically shiny, conductive, and malleable, while nonmetals are dull, insulative, and brittle.

Front

What is the role of electrons in chemical bonding?

Back

Electrons, particularly valence electrons, are involved in forming bonds between atoms, leading to the creation of molecules.

Front

What is the octet rule?

Back

Atoms tend to gain, lose, or share electrons to achieve a full outer shell of eight electrons.