Periodic Trends Lesson

Multiple Choice

Which of the following properties is NOT typically considered a periodic trend in the periodic table?

• Mass

• Size

• Color

• Reactivity

Open Ended

Why is it important for scientists to understand the trends in the periodic table?

Multiple Choice

Which direction on the periodic table does atomic mass increase?

• Down and right

• Up and left

• Down and left

• Up and right

Open Ended

Explain how atomic radius changes as you move down a group and across a period in the periodic table.

Multiple Choice

Which of the following best describes ionization energy?

• The energy required to remove an electron from an atom

• The distance from the nucleus to the valence electrons

• The size of an atom

• The attraction of an atom to electrons

Multiple Select

Select all the trends that increase as you move right across a period in the periodic table.

• Atomic mass

• Ionization energy

• Electronegativity

• Atomic radius

Multiple Choice

In which direction does electronegativity increase on the periodic table?

• Up and right

• Down and left

• Up and left

• Down and right

Open Ended

Explain why noble gases are generally excluded from discussions about reactivity.

Multiple Select

Which of the following statements about the reactivity of metals is/are correct?

• Reactivity increases down a group.

• Reactivity increases left across a period.

• Reactivity increases up a group.

• Reactivity increases right across a period.

Multiple Choice

Which element is the most reactive metal according to the periodic table?

• Francium

• Sodium

• Potassium

• Calcium

Open Ended

How do periodic trends such as mass, size, and reactivity help scientists understand the properties of elements?

Multiple Choice

What are some examples of periodic trends observed in the periodic table?

• Mass, size, and reactivity

• Color, taste, and smell

• Shape, texture, and density

• Temperature, pressure, and volume