Chemistry

In covalent bonds, electrons are ___________.

• transferred
• gained
• lost
• shared

In a polar covalent bond, electrons are shared ___________.

• equally
• unequally
• between non-metals with similar electronegativities
• between a metal and a non-metal

Which of the following is the correct Lewis structure for water?

• A
• B
• C

Tags

NGSS.HS-PS1-1

Electronegativity is a measurement of the ability of a nucleus to...

• attract bonding electrons
• attract other nuclei
• attract elenece in the non-valence energy levels

How many electrons are represented by a single straight line in a Lewis structure?

• 1
• 2
• 4
• 6

In this Lewis structure, the symbol above F means...

• electrons are being transferred to Fluorine
• electrons are less attracted to F than H
• electrons are more attracted to F than H
• Fluorine has formed a cation

Tags

NGSS.HS-PS1-2

This is an example of a __________ bond.

• non-polar covalent
• polar covalent
• ionic
• metallic

Tags

NGSS.HS-PS1-1

Partial charges like the ones shown here are called:

• dipoles
• deltas
• ions
• magnetic poles

A bond with a partially negative end and a partially positive end is:

• ionic
• polar
• non-polar
• isometric

A diatomic molecule like O2 is always_______ because electrons are shared ________.

• nonpolar; equally
• polar; equally
• nonpolar; unequally
• nonpolar; unequally