What is a qubit?

What is an atom?
1. The smallest constituent unit of ordinary matter that has the properties of a chemical element
2. The smallest piece of a substance that is still that substance
3. The smallest piece of anything
4. A small molecule
What does the Bloch sphere picture show?
1. How a ball is like an atom
2. The direction an atom is pointing
3. The state of a qubit
4. How to play billiards
What elements are the qubits in IBM's quantum computer made of?
1. Nickel, Silver and Arsenic
2. Niobium, Silicon and Aluminium
3. Neon, Strontium and Astatine
4. Niobium, Scandium and Actinium
At what temperature is the IBM quantum computer kept?
1. 100° Celsius
2. 0° Celsius
3. 273° Celsius
4. -273° Celsius