7th Grade Chapter 2 Vocabulary

The _____________ electrons of an atom are those electrons that have the highest energy.

• chemical

• valence

• carbon

• smallest

Tags

NGSS.HS-PS1-1

A(n) ____________________ includes the symbol for the element surrounded by dots

• electron dot diagram

• energy dot diagram

• chemical bond diagram

• electron chemical diagram

A ___________ bond is the force of attraction that holds atoms together as a result of the rearrangement of electrons between them.

• chemistry

• carbon

• chemical

• metalloid

Tags

NGSS.MS-PS1-5

A(n) ________ is an atom or group of atoms that has an electric charge.

• ion

• metalloid

• valance

• bond

Ions that are made of more than 1 atom are called ________________ ions.

• multiatomic

• polyatomic

• positive atomic

• negative atomic

A(n) ____________ bond is the attraction between two oppositely charged ions.

• chemical

• common

• ionic

• extended

A(n) __________ compound is made up of positive and negative ions.

• ionic

• multi-atomic

• polyatomic

• neutral

A _____________ formula is a group of symbols that show the ratio of elements in a compound.

• chemistry

• balanced

• chemical

• ionic

_______________ tell the ratio of elements in a compound.

• Subscripts

• Coefficients

• Superscripts

• Symbols

Tags

NGSS.MS-PS1-1

Ions form an orderly, three-dimensional arrangement called a ______________.

• compound

• covalent

• crystal

• cube