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Question 1BiologySLPaper 1A

Water molecules contain polar covalent bonds due to unequal sharing of electrons. What is the result of this polarity?

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Target the exact topics you need with thousands of IB-style questions, worked solutions, and instant feedback.

Practice Every Question Type

Target the exact topics you need with thousands of IB-style questions, worked solutions, and instant feedback.

Find the exact topic you need

Choose a subject, paper, and topic so every practice session stays focused on your current goal.

Follow every step of the solution

Use visual, step-by-step walkthroughs to see how each calculation moves from the question to the final answer.

Step-by-step walkthrough

Step 1: Find the wavelength

Use the wave equation from the data booklet and rearrange it for wavelength.

360 = 300 λ

Step 2: Make a fraction

Now express the given separation as a fraction of a full wavelength.

0.30 \div 1.20

write as a fraction

\frac{d}{λ} = \frac{0.30}{1.20}

\frac{d}{λ} = 0.25

\frac{d}{λ} = \frac{1}{4} of a cycle

Step 3: Convert to phase

One complete cycle corresponds to $2 π$ radians, so take the same fraction of $2 π$ .

quarter of

2 π

Δ ϕ = \frac{1}{4} (2 π)

Δ ϕ = \frac{π}{2} rad

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Question Bank

Practise the questions your exams demand

Work through IB-style questions, compare your approach with the mark scheme, and learn from feedback while you practise.

Open the Question Bank

Question 1BiologySLPaper 1A

Water molecules contain polar covalent bonds due to unequal sharing of electrons. What is the result of this polarity?

Ask me anything!

Practice Every Question Type

Target the exact topics you need with thousands of IB-style questions, worked solutions, and instant feedback.

Practice Every Question Type

Target the exact topics you need with thousands of IB-style questions, worked solutions, and instant feedback.

Find the exact topic you need

Choose a subject, paper, and topic so every practice session stays focused on your current goal.

Follow every step of the solution

Use visual, step-by-step walkthroughs to see how each calculation moves from the question to the final answer.

Step-by-step walkthrough

Step 1: Find the wavelength

Use the wave equation from the data booklet and rearrange it for wavelength.

360 = 300 λ

Step 2: Make a fraction

Now express the given separation as a fraction of a full wavelength.

0.30 \div 1.20

write as a fraction

\frac{d}{λ} = \frac{0.30}{1.20}

\frac{d}{λ} = 0.25

\frac{d}{λ} = \frac{1}{4} of a cycle

Step 3: Convert to phase

One complete cycle corresponds to $2 π$ radians, so take the same fraction of $2 π$ .

quarter of

2 π

Δ ϕ = \frac{1}{4} (2 π)

Δ ϕ = \frac{π}{2} rad

Learn from every response

Use mark schemes, worked reasoning, and Jojo feedback to understand what earned marks and what to improve next.

practice questions

questions with step-by-step walkthroughs

questions answered by students

Start studying in a couple of minutes

A free account saves your progress, remembers what you have covered, and picks up where you left off on any device.

Open the Question Bank