Chemistry Balancing Equations Quiz

When the equation \[\_\_ \text{NH}_3 + \_\_ \text{O}_2 \rightarrow \_\_ \text{N}_2 + \_\_ \text{H}_2\text{O}\] is correctly balanced using the smallest whole numbers, what will be the coefficient of \(\text{O}_2\)?

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Tags

NGSS.MS-PS1-5

When the equation ___ Al(s) + ___ O₂(g) → ___ Al₂O₃(s) is correctly balanced using the smallest whole numbers, what will be the coefficient of Al(s)?

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Tags

NGSS.MS-PS1-5

The chemical equation below is unbalanced. Li + N₂ → Li₃N When the equation is correctly balanced using the smallest whole numbers, what will be the coefficient of lithium (Li)?

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Tags

NGSS.MS-PS1-5

When the equation ___ Ca(ClO₃)₂ → ___ CaCl₂ + ___ O₂ is correctly balanced, what will be the coefficient of O₂?

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Tags

NGSS.MS-PS1-5

When the equation Fe₂O₃(s) + CO(g) → Fe(l) + CO₂(g) is correctly balanced using the smallest whole numbers, what will be the coefficient of Fe(l)?

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Tags

NGSS.MS-PS1-5

Place the coefficients that correctly balance the chemical equation. Chemical equation: C₂H₄(g) + O₂(g) → CO₂(g) + H₂O(g)

• 1, 3, 2, 2

• 2, 1, 2, 3

• 1, 2, 3, 2

• 2, 3, 1, 2

Tags

NGSS.MS-PS1-5

When heated, mercuric oxide decomposes to form liquid mercury and oxygen. A scientist heated 10 grams (g) of mercuric oxide and formed 9.3 grams of liquid mercury. How many grams of oxygen were formed?

• 0.7 g

• 1.0 g

• 0.5 g

• 1.5 g

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

Which statements of the following are true regarding the equation listed below? Fe + CuCl₂ → FeCl₂ + Cu Select TWO correct answers.

• The equation is balanced.

• The equation is not balanced.

• This is a synthesis reaction.

• This is a single-replacement reaction.

• This is a decomposition reaction.

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

Which of the reactions below are synthesis reactions? Select TWO correct answers.

• CaCO₃(s) → CaO(s) + CO₂(g)

• 4Al(s) + 3O₂(g) → 2Al₂O₃(s)

• 2Na + Cl₂ → 2NaCl

• 2C₄H₁₀(g) + 13O₂(g) → 8CO₂(g) + 10H₂O(g)

• Zn(s) + 2 HCl(aq) → ZnCl₂(aq) + H₂(g)

Tags

NGSS.MS-PS1-5

Which word equation represents a neutralization reaction?

• salt + water → acid + base

• base + salt → water + acid

• salt + acid → base + water

• base + acid → salt + water