Exploring Periodic Trends in Chemistry

The video tutorial covers trends in the periodic table, including atomic radius, ionic radius, ionization energy, and electronegativity. It explains how these properties change across periods and groups, providing examples and questions to reinforce understanding. The tutorial emphasizes that these are general trends with exceptions.

How is the periodic table organized?

• By increasing atomic number

• By date of discovery

• By alphabetical order

• By increasing atomic mass

How many periods are there in the periodic table?

• 5

• 8

• 6

• 7

What happens to the atomic radius as you move from left to right across a period?

• It stays the same

• It decreases

• It increases

• It fluctuates

Which element has a larger atomic radius: fluorine or bromine?

• Fluorine

• Cannot be determined

• Bromine

• They are the same

What happens to the ionic radius of elements as you move down a group?

• It increases

• It fluctuates

• It decreases

• It stays the same

Which ion is smaller: potassium or sodium?

• Cannot be determined

• Potassium

• Sodium

• They are the same

What is the first ionization energy?

• Energy needed to add an electron

• Energy needed to remove the outermost electron

• Energy needed to form a bond

• Energy needed to split an atom

Tags

NGSS.HS-PS1-2

Which element has a higher first ionization energy: carbon or nitrogen?

• Nitrogen

• Cannot be determined

• Carbon

• They are the same

Tags

NGSS.HS-PS1-1

What is electronegativity?

• Ability of an atom to conduct electricity

• Ability of an atom to form ionic bonds

• Ability of an atom to attract pairs of electrons

• Ability of an atom to lose electrons

Tags

NGSS.HS-PS1-1

Which element has a smaller electronegativity: fluorine or chlorine?

• They are the same

• Cannot be determined

• Fluorine

• Chlorine

Tags

NGSS.HS-PS1-2