Writing and Balancing Chemical Reactions

In the reaction methane + oxygen turns into carbon dioxide + water, the methane and oxygen are called _______________.

• reactants
• products
• neutrals
• energizers

Tags

NGSS.MS-PS1-5

Why are chemical equations always balanced? Select ALL that apply.

• Matter cannot be created.

• Matter cannot be destroyed.

• Matter can only be rearranged/conserved.

• Matter doesn't matter.

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-7

Is this chemical equation balanced? Why or why not? Choose the BEST answer.

• Yes, the amount of atoms for each element are equal on both the reactant and product side.

• No, the carbons are not the same number on both the reactant and product side.

• No, neither the carbons or hydrogens are the same amount on both the reactant and product side.

• No, none of the elements (carbon, hydrogen, or oxygen) are the same amount on both the reactant and product side.

Tags

NGSS.HS-PS1-7

a substance that is formed as the result of a chemical reaction

• Product 
• Reactant
• Starters
• Enders

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Balance this reaction: ____ Na₃PO₄ + ____ KOH ---> ____ NaOH + ____ K₃PO₄

• 1,3,3,1
• 1,3,2,1
• 2,3,3,1
• 1,1,3,1

Balancing this reaction: ____ CH₄ + ____ O₂ ---> ____ CO₂ + ____ H₂O

• 2,1,3,1
• 1,2,1,2
• 1,2,2,1
• 2,1,1,2

Tags

NGSS.HS-PS1-7

Balance this reaction: ____ NaF + ____ Br₂ ---> ____ NaBr + ____ F₂

• 3,1,2,1
• 1,2,3,4
• 2,1,2,1
• 1,2,1,2

Balance this reaction: ____ AlBr₃ + ____ K₂SO₄ ---> ____ KBr + ____ Al₂(SO₄)₃

• 1,1,1,1
• 2,3,6,1
• 2,6,1,1
• 3,1,2,2

Balance this reaction: ____ NH₃ + ____ H₂SO₄ ---> ____ (NH₄)₂SO₄

• 2,1,1
• 2,1,2
• 1,2,2
• 2,2,1

Balance this reaction: ____ HCN + ____ CuSO₄ ---->____ H₂SO₄ + ____ Cu(CN)₂

• 2,1,1,2
• 2,1,1,1
• 1,2,2,1
• 1,2,1,1