Unit 3: Periodicity Pre & Post-Assessment

What is the trend in atomic radius as one moves down a group?

• Atomic radius increases

• Atomic radius decreases

• Atomic radius does not change

• Atomic radius decreases then increases

• Atomic radius increases then decreases

What is the trend in atomic radius as one moves across a period?

• Atomic radius increases

• Atomic radius decreases

• Atomic radius does not change

• Atomic radius decreases then increases

• Atomic radius increases then decreases

What is the general trend with ionization energy as one moves across a period from left to right?

• Ionization energy generally decreases

• Ionization energy generally increases

• Ionization energy does not change

• Ionization energy is the same value for all elements

• Ionization energy is directly proportional to the atomic radius

Tags

NGSS.HS-PS1-2

What is the general trend with ionization energy as one moves down a group?

• Ionization energy generally decreases

• Ionization energy generally increases

• Ionization energy does not change

• Ionization energy is the same value for all elements

• Ionization energy is directly proportional to the atomic radius

What is the trend for reactivity of the alkali metals as one moves down a group?

• Reactivity increases

• Reactivity decreases

• Reactivity is relatively the same for the whole group

• Alkali metals are generally unreactive

• The reactivity decreases then increases

Which element has the highest electronegativity?

• F

• K

• I

• Cs

• H

Tags

NGSS.HS-PS1-1

What is the trend in electronegativity as one moves across a period from left to right?

• Electronegativity increases

• Electronegativity decreases

• Electronegativity stays the same

• Electronegativity is always greatest in the lower left of the periodic table

• Electronegativity follows the same pattern as atomic radius

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which atoms have a larger atomic radius than sodium? Select all the apply.

• Lithium

• Beryllium

• Boron

• Potassium

• Cesium

Tags

NGSS.HS-PS1-1

Which atoms have a smaller atomic radius than aluminum? Select all that apply.

• Carbon

• Nitrogen

• Calcium

• Strontium

• Barium

Tags

NGSS.HS-PS1-1

What is the relationship between ionization energy and atomic radius?

• A direct relationship, as the atomic radius increases, the ionization energy also increases.

• A direct relationship, as the atomic radius increases, the ionization energy decreases.

• An indirect relationship, as the atomic radius increases, the ionization energy also increases.

• An indirect relationship, as the atomic radius increases, the ionization energy decreases.

• There is no relationship between the two, they do not affect one another.