General Science Quiz 8B

Electrons orbit the nucleus of an atom in shells called energy levels.

• true

• false

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

An atom can have more than one energy level around its nucleus.

• true

• false

The first energy level of an atom can hold ​ (a)   electrons.

The second energy level of an atom can hold ​ (b)   electrons.

• two
• eight
• one
• ten

The electrons in the outermost shell of an atom are called __ electrons.

The elements in the far right column of the periodic table are called the __ gases.

Noble gases are ​ (a)   with other elements because they ​ (b)   electrons to fill their outermost energy level.

• not very reactive
• have enough
• very reactive
• do not have enought

Unlike the noble gases, other elements on the periodic table do not have a complete outer shell of electrons. What are two ways that these atoms can fill their valence shells?

When atoms share electrons, they form __ bonds.

When an atom gives up or takes on electrons in order to have a full outer shell, the atom becomes an...

Positively charged ions are called ​ (a)   .

Negatively charged ions are called (b)   .

• cations
• anions