Chemical Bonding

A (a)   shows the number of atoms of each element in a compound.

• subscripts
• superscripts

• chemical symbols

• oxidation numbers

Tags

NGSS.MS-PS1-1

Two of the same element covalently bonded together, such as F₂, is called a (a)   .

• negative ion

• diatomic molecule
• molecule

• crystal

A (a)   shows the elements and the number of elements that make up a compound.

• chemical symbol

• subscript

• chemical formula
• superscript

The type of bond that occurs when atoms share electrons is a(n) (a)   bond.

• magnetic

• polyatomic

• covalent
• ionic

Name the following compound, BaF₂: (a)  

• barium fluorine
• barium fluoride
• none of these

• boron fluorine

The sum of the oxidation numbers in a neutral compound is always (a)   .

• zero
• a negative number

• one

• a positive number

The oxidation number of an atom is shown with a (a)   .

• positive number

• negative number

• superscript

• subscript

How many electrons are needed in the outer energy levels of most atoms for the atom to be chemically stable? HINT: Its the magic number.

• 6

• 2

• 8

• 4

Tags

NGSS.HS-PS1-1

The type of bond that forms when atoms transfer electrons is

(a)   .

• hydrate

• metallic
• ionic
• covalent

What is the total number of atoms in the compound Sr(FO₃)₂?

• 9

• 3

• 5

• 2

Tags

NGSS.MS-PS1-1