Balanced Chemical Equations

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STD 10 - Chemical Reactions and Equations

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Froggy Jumps Balanced Chemical EquationsVersión en línea STD 10 - Chemical Reactions and Equations por pifly .. 1 Why is it important to balance a chemical equation? a To change the properties of products b To ensure the equation looks symmetric c To follow the Law of Conservation of Mass 2 Which of the following is a balanced equation? a Zn + H₂SO₄ → ZnSO₄ + H₂ b Fe + H₂O → Fe₃O₄ + H₂ c H₂ + Cl → HCl 3 What does a skeletal chemical equation lack? a Correct chemical formulas b Coefficients to show balanced atoms c Product formation 4 What is the physical state symbol for a substance dissolved in water? a (g) b (l) c (aq) 5 In the reaction: Fe + 4H₂O → Fe₃O₄ + 4H₂, what is the state of H₂O? a Liquid b Steam (Gas) c Solid 6 Which element should you usually balance first in a chemical equation? a One that appears least often b One with the maximum number of atoms c Hydrogen 7 What is the correct coefficient for Fe in the balanced reaction: Fe + H₂O → Fe₃O₄ + H₂? a 2 b 1 c 3 8 What is the purpose of adding physical states like (s), (l), (g), (aq) in equations? a To show temperature b To indicate the phase of substances c To mark important reactants 9 What is the method called that balances equations using smallest whole number coefficients? a Algebraic method b Observation method c Hit-and-trial method 10 In a balanced equation, the number of atoms of each element on both sides must be: a Unequal b Equal c Double on product side

Froggy Jumps

Balanced Chemical EquationsVersión en línea

STD 10 - Chemical Reactions and Equations

por pifly ..

Why is it important to balance a chemical equation?

To change the properties of products

To ensure the equation looks symmetric

To follow the Law of Conservation of Mass

Which of the following is a balanced equation?

Zn + H₂SO₄ → ZnSO₄ + H₂

Fe + H₂O → Fe₃O₄ + H₂

H₂ + Cl → HCl

What does a skeletal chemical equation lack?

Correct chemical formulas

Coefficients to show balanced atoms

Product formation

What is the physical state symbol for a substance dissolved in water?

(g)

(l)

(aq)

In the reaction: Fe + 4H₂O → Fe₃O₄ + 4H₂, what is the state of H₂O?

Liquid

Steam (Gas)

Solid

Which element should you usually balance first in a chemical equation?

One that appears least often

One with the maximum number of atoms

Hydrogen

What is the correct coefficient for Fe in the balanced reaction: Fe + H₂O → Fe₃O₄ + H₂?

What is the purpose of adding physical states like (s), (l), (g), (aq) in equations?

To show temperature

To indicate the phase of substances

To mark important reactants

What is the method called that balances equations using smallest whole number coefficients?

Algebraic method

Observation method

Hit-and-trial method

In a balanced equation, the number of atoms of each element on both sides must be:

Unequal

Equal

Double on product side

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Balanced Chemical Equations

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Balanced Chemical EquationsVersión en línea

por pifly ..

Why is it important to balance a chemical equation?

Which of the following is a balanced equation?

What does a skeletal chemical equation lack?

What is the physical state symbol for a substance dissolved in water?

In the reaction: Fe + 4H₂O → Fe₃O₄ + 4H₂, what is the state of H₂O?

Which element should you usually balance first in a chemical equation?

What is the correct coefficient for Fe in the balanced reaction: Fe + H₂O → Fe₃O₄ + H₂?

What is the purpose of adding physical states like (s), (l), (g), (aq) in equations?

What is the method called that balances equations using smallest whole number coefficients?

In a balanced equation, the number of atoms of each element on both sides must be:

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