Honors Chemistry Final Exam S1 Review 24-25

Front

Which two families on the periodic table react aggressively?

Back

Alkali metals and halogens are known for their aggressive reactions.

Front

How many valence electrons are in a lithium atom?

Back

Lithium has 1 valence electron.

Front

What does the atomic number represent?

Back

The atomic number indicates the number of protons in an atom.

Front

When chlorine reacts, what does it want to do with its electrons?

Back

Chlorine wants to gain 1 electron.

Front

Which transition indicates energy (light) being released from an atom?

Back

The transition from n=5 to n=3 indicates energy being released.

Front

What are noble gases known for in terms of reactivity?

Back

Noble gases are known for being non-reactive due to their full valence shells.

Front

What is the significance of valence electrons in chemical reactions?

Back

Valence electrons determine how an atom will bond with others.

Front

What is the general trend of reactivity in alkali metals?

Back

Reactivity increases as you move down the group in alkali metals.

Front

What happens to the size of an atom as you move down a group in the periodic table?

Back

The size of an atom increases as you move down a group due to additional electron shells.

Front

What is an ion?

Back

An ion is an atom or molecule that has gained or lost one or more electrons, resulting in a charge.