Is oxygen gas a pure substance?
Understand the Problem
The question is asking whether oxygen gas can be classified as a pure substance or not. To answer this, we need to consider the definition of a pure substance, which is a material that has a uniform and definite composition. Oxygen gas (O2) consists of only one type of molecule and does not contain any other substances, which makes it a pure substance.
Answer
Oxygen gas is a pure substance.
Oxygen gas is a pure substance because it consists of only one type of molecule, which are oxygen molecules.
Answer for screen readers
Oxygen gas is a pure substance because it consists of only one type of molecule, which are oxygen molecules.
More Information
Oxygen is a chemical element and consists solely of oxygen molecules when it is in gaseous form, which qualifies it as a pure substance.
Tips
A common mistake is to confuse a pure substance with a homogeneous mixture. Ensure you understand that a pure substance contains only one type of particle.
Sources
- Classify the following substance as element, compound or mixture - BYJU'S - byjus.com
- Q: Is oxygen a pure substance or a mixture? - CK-12 - ck12.org
- 3.05: Pure Substances and Mixtures - Chemistry LibreTexts - chem.libretexts.org
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