What is a gas?
Q: What is a gas?
A: A gas is one of the four states of matter where molecules move freely and are not attached to each other.
Q: How are molecules in a gas different from those in a liquid?
A: In a gas, molecules are not attached to each other, while in a liquid, molecules are loosely attached or touching each other.
Q: How are molecules in a gas different from those in a solid?
A: In a gas, molecular bonds are weak, while in a solid, molecular bonds are strong, holding molecules together in one shape.
Q: Does a gas have only one volume like a liquid or solid?
A: No, a gas can expand until it fills whatever container it is in, unlike a liquid or solid.
Q: What different types of gas molecules are there?
A: There are pure gases with individual atoms, elemental gases with more than one of the same atom bound together, and compound gases with many types of atoms together.
Q: Can you name an example of a monoatomic gas?
A: Yes, an example of a monoatomic gas is neon.
Q: What is a gas mixture?
A: A gas mixture contains a mix of any of the types of gases mentioned above, such as air which is 87% nitrogen, 0.2% oxygen, 13.7% argon, and carbon dioxide in trace amounts.
