Balanced and Unbalanced Equations

Identify if the following equation is unbalanced or balanced.

HeC₄O₈→C₄+2HeO

• Unbalanced

• Balanced

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Is this balanced?...

Al + O₂ --> 2Al₂O₃

• Yes!

• No!

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Why is the following chemical equation not balanced?
H_{2 +} O₂ --> H₂O

• each side of the equation has a different number of oxygen atoms

• each side of the equation has a different number of hydrogen atoms

• each side has the same mass

Tags

NGSS.MS-PS1-5

What coefficient should be used to make the following equation balanced?

N₂ + O₂ --> ___NO

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-5

In which of the following equations is the law of conservation of mass supported?

• 4P₂ + 10O₂ --> 2P₂O₅

• SO₂ + O₂ --> S₂O₅

• 2Al +3HCl --> 2AlCl₃ +3H₂

• 2H₂O --> 2H₂+O₂

Tags

NGSS.MS-PS1-5

According to the law of conservation of mass the total mass of the products of a chemical reaction ____ the total mass of the reactants.

• is greater than

• is less than

• is the same as

• may be more or less than

Tags

NGSS.MS-PS1-5

Which is Chemical Equation is Balanced?

• CH₄+O₂------CO₂+2H₂O

• H₂+O₂-----2H₂O₄

• 4Al+3O₂-----2Al₂O₃

Tags

NGSS.MS-PS1-5

In this image, the information to the right of the arrow (in black) is called the_______.

• Product

• Reactant

• Chemical Subscript

• Final chemical

Tags

NGSS.MS-PS1-2

Identify if the following equation is unbalanced or balanced. @@ ext{C}_2 ext{H}_6 + ext{O}_2 ightarrow ext{CO}_2 + ext{H}_2 ext{O}@@

• Unbalanced

• Balanced

Tags

NGSS.MS-PS1-5

Is this balanced? @@ ext{Fe} + ext{O}_2 ightarrow ext{Fe}_2 ext{O}_3@@

• Yes!

• No!

Tags

NGSS.MS-PS1-5