Chemistry Unit 7: Chemical Equations & Reactions Review

CaCO₃ represents a chemical

• Symbol
• Formula
• Subscript
• Reaction

Tags

NGSS.MS-PS1-1

The substances listed on the left side of a chemical equation are the

• Products
• Coefficients
• Precipitates
• Reactants

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

In chemical reactions, what does the law of conservation of mass mean?

• Matter is not created or destroyed under normal conditions.

• The total mass of the reactants is greater than the total mass of the products.

• The total mass of the reactants is less than the total mass of the products.

• Matter is not changed.

Tags

NGSS.MS-PS1-5

A solid that is produced as a result of a chemical reaction in solution & separates from solution

• reactant

• yield

• precipitate

• coefficient

An equation in which the reactants & products in a chemical reaction are represented by words:

• chemical equation

• word equation

• reversible reaction

• formula equation

A chemical reaction in which the products re-form the original reactants:

• coefficient

• precipitate

• reversible reaction

• word equation

An equation that represents the reactants and products of a chemical reaction by their formulas or symbols:

• formula equation

• word equation

• cofficient

A small whole number that appears in front of a formula in a chemical equation

• coefficient

• precipitate

• subscript

Tags

NGSS.MS-PS1-5

Which is NOT an indicator of a chemical change?

• Color Change

• Precipitate formed

• Production of Gas (Bubbles)

• Change of state

Tags

NGSS.MS-PS1-2

H_2, F_2, O₂, I₂, Cl₂, Br₂, N₂ are all

• polyatomic ions

• diatomic molecules

• noble gases

• transition metals