Writing Chemical Equations and Types of Reactions

What is the correct formula for Sodium Oxide?

• NaO
• NaO₂
• Na₂O
• Na₂O₂

Tags

NGSS.HS-PS1-2

The reactants are on the left side of the chemical equation.

• True
• False

Tags

NGSS.MS-PS1-5

A chemical reaction is ___________________.

• when substances undergo changes that result in a new substance
• a characteristic of a substance that can be observed without changing the substance into another substance
• when substances undergo changes that alter their form or physical appearance

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Select the pair of words that correctly displays the general FORMAT for writing CHEMICAL EQUATIONS.

• products  -->  reactants
• products  -->  products
• reactants  -->  products
• reactants  -->  reactants

Tags

NGSS.MS-PS1-5

What would be the proper chemical formula for combining Al³⁺ and Cl^- :

• AlCl₃
• Al₃Cl
• AlCl
• Al₃Cl₃

Tags

NGSS.MS-PS1-1

The proper formula for magnesium hydroxide:

• MgOH
• Mg₂OH
• Mg(OH)₂
• Mg₂OH₂

What is the charge on the hydroxide ion?

• 0
• -1
• -2
• -3

The chemical formula for diphosphorous pentoxide is

• P₅O₂
• 2P 5O
• 5P 2O
• P₂O₅

Tags

NGSS.MS-PS1-1

Potassium sulfate is written as

• K₄SO₂
• P₂(SO₄)₃
• K₂SO₄
• P₄SO₃

The formula for copper (II) hydroxide is

• Cu(II)OH
• Cu(OH)₂
• Cu₂OH
• CuOH₂

Tags

NGSS.HS-PS1-2