Unit 4 Test

Front

What happens to electronegativity as you move down a group on the periodic table?

Back

Electronegativity decreases, because there is more distance between the electrons and the nucleus.

Front

Where would the lanthanides and actinides be located on the periodic table if placed correctly?

Back

In periods 6 and 7 between transition metals and alkali earth metals.

Front

What trend occurs in ionization energy as you move from left to right across a period?

Back

Ionization energy increases, because there are more protons pulling on the electrons.

Front

Which group of elements is known to be non-reactive?

Back

Noble Gases.

Front

What is a valence electron?

Back

An electron that is on the outermost electron shell and DOES participate in bonding.

Front

What is the general trend of atomic size as you move down a group in the periodic table?

Back

Atomic size increases due to the addition of electron shells.

Front

What is the general trend of atomic size as you move from left to right across a period?

Back

Atomic size decreases due to increased nuclear charge pulling electrons closer.

Front

What are alkali metals known for?

Back

They are highly reactive and have one valence electron.

Front

What is the significance of the octet rule in chemistry?

Back

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

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons, while covalent bonds involve the sharing of electrons.