Elements, Compounds, & Periodic Table Quiz

How many periods are there on the Periodic Table?

• 5

• 6

• 7

• 8

What happens to the atomic number as you move from left to right across a period in the Periodic Table?

• It decreases

• It remains the same

• It increases

• It varies unpredictably

Do elements in the same period have the same number of energy levels or shells?

• Yes, they have the same number of energy levels

• No, they have different numbers of energy levels

• Yes, but only in the even-numbered periods

• No, they have the same chemical properties instead

Are the chemical properties of elements in the same period similar?

• Yes, they are all similar

• No, they are not all similar

• Yes, but only within the same group

• Chemical properties do not change across a period

What do the groups or families on the Periodic Table represent?

• Rows numbered from 1-18

• Columns numbered from 1-18

• A classification based on atomic mass

• A classification based on atomic number

How are the elements in the same group on the Periodic Table similar?

• They have the same atomic number

• They have the same atomic mass

• They have the same number of valence electrons

• They are all metals

Which group on the Periodic Table is known to be the most reactive?

• Group 1

• Group 7

• Group 17

• Group 18

Which group on the Periodic Table is considered the most inert (stable)?

• Group 1

• Group 7

• Group 17

• Group 18

How many energy levels or shells do elements in period 3 of the Periodic Table have?

• 2

• 3

• 4

• 7

By moving down the periods on the Periodic Table, what happens to the number of energy levels or shells?

• It decreases by 1

• It remains the same

• It increases by 1

• It doubles