Unit 2: Chemical Formulas and Equations Vocabulary

Element or compound?
H₂O

• element
• compound

Tags

NGSS.MS-PS1-1

The blue numbers in the image below represent ________

• element symbol

• coefficients

• subscripts

• yield

What do we call a substance consisting of a single atom?

• coefficient
• element
• compound
• molecule

What do we call a chemical substance made up of 2 or more different types atoms bonded together?

• formula
• atom
• subscript
• compound

Tags

NGSS.MS-PS1-1

One or 2 letters used to represent an element

• symbol(s)

• subscript

• element name

• coefficient

A combination of symbols and numbers that represent the number and types of elements (atoms) present in a compound

• chemical formula

• coefficient

• reactant

• compound

Tags

NGSS.MS-PS1-1

A small number to the right of a symbol that is written below the normal line of letters to show how many atoms of an element are present in a substance.

• subscript

• coefficient

• reactant

• compound

When substances interact to form one or more new substances with different properties that the original substance.

• chemical formula

• coefficient

• chemical reaction

• physical change

Tags

NGSS.MS-PS1-2

A combination of symbols and chemical formulas used to describe what happens in a chemical reaction. It identifies the reactants and resulting products.

• chemical formula

• chemical equation

• chemical reaction

• physical change

A number written in front of a chemical formula to show how many molecules of that substance are present.

• chemical formula

• coefficient

• reactant

• compound