Atoms and the Periodic Table Quiz

What subatomic particles are found in the nucleus of an atom?

• Electrons

• Protons and neutrons

• Protons and electrons

How many electrons does an atom of oxygen have in its outermost shell?

• 2

• 6

• 8

Which of the following has a negative charge?

• Proton

• Neutron

• Electron

The atomic number of an element is determined by the number of:

• Electrons

• Protons

• Neutrons

In an atom, the number of protons is always equal to the number of:

• Neutrons

• Electrons

• Particles

Elements in the same group of the periodic table have the same number of:

• Protons

• Neutrons

• Electrons in their outer shell

The atomic number increases as you move:

• Down a group

• Across a period

• In reverse through the periodic table

Noble gases are found in which group of the periodic table?

• Group 1

• Group 18

• Group 7

Which of the following is true about alkali metals?

• They are found in Group 1 and react vigorously with water

• They are found in Group 18 and are unreactive

• They are found in Group 2 and are nonmetals

As you move down Group 1 of the periodic table, the reactivity of the elements:

• Increases

• Decreases

• Stays the same