When two atoms share electrons, a chemical bond is formed.  This type of bond is called:

• covalent bond
• ionic bond
• crystal bond
• polyatomic bond

Which of these is covalent?

• NaCl
• Pb(NO₃)₂
• CO₂
• AlCl₃

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

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
• James Bond's brother

A covalent bond in which electrons are shared unequally is:

• polar
• a double bond
• ionic
• polyatomic

Fluorine (F₂) is a(n)  _________________                  molecule because the valence electrons are shared equally between the two fluorine atoms.

• polar
• nonpolar
• ionic
• crystal

Tags

NGSS.HS-PS1-1

What is the charge on an Aluminum ion?

• 3
• +3
• +2
• +1

Tags

NGSS.HS-PS1-1

How many valence electrons does nitrogen have?

• 3
• 2
• 5
• 1

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many valence electrons does hydrogen have?

• 4

• 3
• 2
• 1

Tags

NGSS.HS-PS1-1

A(n) _________ is an ion with a positive (+) charge.

• anion
• cation
• ion
• solute

Name CCl₄

• carbon carbon tetraiodide
• carbon tetrachloride
• monocarbon tetrachloride
• water