The Atomic Theory, The Periodic Table, The Atoms and The Chemical Bond

An atom's valence electrons are those electrons that have the HIGHEST energy

• True
• False

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Atoms tend to be stable and nonreactive if they have SIX valence electrons. 

• True
• False

In the periodic table, the number of valence electrons in each element DECREASES from left to right across each period. 

• True
• False

Tags

NGSS.HS-PS1-1

The reactivity of a metal depends on how easily it LOSES its valence electrons. 

• True
• False

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Within each PERIOD in the periodic table, elements have similar properties because they have the same number of valence electrons. 

• True
• False

The number of ___________ in the atom of an element determines its chemical properties. 

• valence electrons
• atoms

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

The columns in the periodic table are called ___________. 

• groups
• periods

A(n) ___________ shows the number of valence electrons in an atom in pictorial fashion. 

• chemical bond
• electron dot diagram

The attractive force that holds two atoms together is called a(n) _______________.

• electron dot diagram
• chemical bond

Because it can either lose or share electrons when it combines with other elements, each __________ has some of the properties of metals and some of the properties of nonmetals. 

• metalloids
• alloys