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MYP Integrated Sciences Topic Balancing Equations… | RevisionDojo

MYP Integrated Sciences Balancing Equations Questionbank

Question 1

In the context of the law of conservation of mass, what specifically occurs to the atoms of the reactants during a chemical reaction?

The atoms are rearranged into different combinations to form products

The atoms are converted into energy to facilitate the reaction

The atoms of the reactants are destroyed and new atoms are created

The atoms lose a negligible amount of mass as they form new bonds

Question 2

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Why is changing the subscripts in a chemical formula, such as turning $\mathrm{H}_2\mathrm{O}$ into $\mathrm{H}_2\mathrm{O}_2$ , an incorrect way to balance an equation?

It changes the chemical identity of the substance

Subscripts must always be even numbers

It violates the law of gravity

It makes the equation too long

Question 3

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If a magnesium ribbon is burned in an open crucible, the mass of the resulting white powder (magnesium oxide) is found to be greater than the mass of the original magnesium. This is because:

Oxygen atoms from the air combine with the magnesium to form the product.

The magnesium reacts with nitrogen from the air to form a heavy solid.

Magnesium atoms gain mass when they are heated.

The crucible absorbs moisture from the magnesium during heating.

Question 4

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True or False: In a balanced chemical equation, the sum of the coefficients of the reactants must always be equal to the sum of the coefficients of the products.

True

False

Question 5

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In the balanced equation for the combustion of methane:

\mathrm{CH}_4 + 2\mathrm{O}_2 \rightarrow \mathrm{CO}_2 + 2\mathrm{H}_2\mathrm{O}

What is the specific ratio of oxygen molecules consumed to carbon dioxide molecules produced?

1:2

1:1

2:1

2:2

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Practice MYP MYP Integrated Sciences Topic Balancing Equations with authentic exam-style questions for both SL and HL students. This question bank focuses on the exact syllabus content for Balancing Equations and mirrors Paper 1, 2 style where relevant.

Get instant solutions, detailed explanations, and build confidence with questions aligned to MYP examiner expectations.

Question 1

View answer

In the context of the law of conservation of mass, what specifically occurs to the atoms of the reactants during a chemical reaction?

The atoms are rearranged into different combinations to form products

The atoms are converted into energy to facilitate the reaction

The atoms of the reactants are destroyed and new atoms are created

The atoms lose a negligible amount of mass as they form new bonds

Question 2

View answer

Why is changing the subscripts in a chemical formula, such as turning $\mathrm{H}_2\mathrm{O}$ into $\mathrm{H}_2\mathrm{O}_2$ , an incorrect way to balance an equation?

It changes the chemical identity of the substance

Subscripts must always be even numbers

It violates the law of gravity

It makes the equation too long

Question 3

View answer

If a magnesium ribbon is burned in an open crucible, the mass of the resulting white powder (magnesium oxide) is found to be greater than the mass of the original magnesium. This is because:

Oxygen atoms from the air combine with the magnesium to form the product.

The magnesium reacts with nitrogen from the air to form a heavy solid.

Magnesium atoms gain mass when they are heated.

The crucible absorbs moisture from the magnesium during heating.

Question 4

View answer

True or False: In a balanced chemical equation, the sum of the coefficients of the reactants must always be equal to the sum of the coefficients of the products.

True

False

Question 5

View answer

In the balanced equation for the combustion of methane:

\mathrm{CH}_4 + 2\mathrm{O}_2 \rightarrow \mathrm{CO}_2 + 2\mathrm{H}_2\mathrm{O}

What is the specific ratio of oxygen molecules consumed to carbon dioxide molecules produced?

1:2

1:1

2:1

2:2

Unlock all 42 questions with a free account

Get instant solutions, detailed explanations, and build confidence with questions aligned to MYP examiner expectations.

MYP Integrated Sciences Balancing Equations Questionbank

MYP Integrated Sciences Balancing Equations Questionbank

Unlock all 42 questions with a free account

MYP MYP Integrated Sciences Topic Balancing Equations Questionbank

Unlock all 42 questions with a free account

MYP MYP Integrated Sciences Topic Balancing Equations Questionbank