Biochem Part 1 Practice

How many carbons are in this molecule?

• 9

• 10

• 11

• 12

Magnesium bromide is an ionic compound with the chemical formula MgBr₂.  What does the "2" tell you?

• There are 2 bromide ions for every magnesium ion
• Bromide has a 2- charge
• Bromide has a 2+ charge
• There are 2 magnesium ions to every bromide ion

Tags

NGSS.MS-PS1-1

How are covalent bonds explained?

• When one atom takes the other atom's electron
• When the atom shares an electron with an another atom
• When the two nucleus merge
• When the neutrons leave the nucleus

Tags

NGSS.MS-PS1-1

In a polar covalent bond, the electrons gather around...

• The atom with the Greatest Electronegativity

• The atom with the Lowest Electronegativity

• Each atom Equally

• None of the Above

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

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

Tags

NGSS.HS-PS1-1

Classify the following molecule.

• polar

• nonpolar

Tags

NGSS.HS-PS1-2

Classify the following molecule.

• polar

• nonpolar

Tags

NGSS.HS-PS1-1

Is the following molecule polar or nonpolar?

• polar

• nonpolar

The attraction that an atom has for shared electrons in bonds is

• electron affinity.

• electronegativity.

• electropositivity.

• electromagnetism.

Excluding the Noble gas family, where on the Periodic Table are the elements with the highest electronegativity located?

• upper right

• lower right

• upper left

• lower left