Periodic Trends Part I

(a)   is NOT a periodic trend.

• Atomic mass
• Ionization energy
• Electronegativity
• Atomic radius

The columns of the periodic table are called (a)   .

• Periods
• Groups
• Rows
• Levels

What are the rows of the periodic table called?

• Groups

• Columns

• Periods

• Sections

Match the following characteristics with their corresponding group property.

• Characteristic of elements with the same atomic number

• Same number of valence electrons

• Characteristic of elements in the same group

• Same number of protons

• Characteristic of elements in the same period

• Same atomic mass

• Characteristic of isotopes

• Same atomic number

What is the significance of valence electrons in chemical reactions?

• They determine the atomic mass

• They determine the reactivity of an element

• They determine the atomic number

• They determine the color of an element

Tags

NGSS.MS-PS1-1

Which group contains the alkali metals?

• Group 1

• Group 2

• Group 17

• Group 18

Which element is an exception to the rule regarding "A" numbers and valence electrons?

• Helium

• Hydrogen

• Lithium

• Beryllium

Tags

NGSS.HS-PS1-1

What happens when particles with like charges are near each other?

• They attract each other

• They repel each other

• They combine to form a neutral particle

• They have no effect on each other

Which elements are in the same period?

• A & F
• F, B & D
• E & D
• F & B

Tags

NGSS.HS-PS1-1

Elements in the same period have the same number of

• valence electrons

• protons

• electrons

• energy levels