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IB Chemistry Test Prep - Question List

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1. Which of the following pairs of compounds are allotropes?

CO₂ and CH₄
NH₄+ and NH₃
NaCl and LiCl
O₂ and O₃
Ne and Ar

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2. What is the expected H-C-H bond angle in a molecule of CH₄?

90 degrees
109.5 degrees
120 degrees
60 degrees
100 degrees

See answer

3. Which of the following gases is the third most abundant in the Earth’s atmosphere?

Oxygen
Argon
Nitrogen
Carbon dioxide
Radon

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4. A neutral element has a mass number of 23 and 12 neutrons. What is the identity of this element?

Sodium
Magnesium
Vanadium
Krypton
Iodine

See answer

5. Which of the following is the correct molecular formula for hydrobromic acid?

HBrO
HBr
H₂Br
H₂OBr
H₂O₂Br

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Study Mode Free Daily Question Test Mode

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IB Chemistry Test Prep - Question List

Select how would you like to study

Select how would you like to study