Atoms and Bonding

Electrons involved in bonding between atoms are

• positively charged

• valence elections

• inside the nucleus

• closest to the nucleus

What is a double bond?

• a bond between two atoms

• one pair of electrons shared between two atoms

• two pairs of electrons shared between two atoms

• two pairs of electrons shared between four atoms

Tags

NGSS.HS-PS1-1

When an atom loses an electron, it becomes a

(think about a magnet)

• positive ion

• negative ion

• neutral ion

• neutral atom

Which of the following groups contains the most reactive elements?

• the noble gases

• the alkali metals

• the alkaline earth metals

• the carbon family

Solid metals are good conductors of heat and _________

• cold

• electricity

• ions

• atoms

Tags

NGSS.MS-PS3-3

When electrons are transferred between two atoms, a covalent bond is formed

• True

• False

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

• True
• False

A positively charged particles is 

• an electron
• a neutron
• a proton
• an isotope

The element with the smallest atomic number is

• helium 
• carbon
• nitrogen
• hydrogen

Because an atom is neutral, the number of

• electrons equals the number of protons
• protons equals the number of neutrons
• isotopes equals the number of electrons
• electrons equals the number of neutrons