Crash Course Chemistry Quiz

Who published a paper on the periodicity of elements before Mendeleev?

• John Newlands

• Erwin Schrodinger

• John Dalton

• Niels Bohr

How did John Newlands compare the repetition of elements to?

• A musical scale

• A painting

• A mathematical equation

• A chemical reaction

What did Niels Bohr propose about electrons in his model of the atom?

• They behave like waves

• They are solid particles

• They exist in multiple dimensions

• They orbit the nucleus in circular paths

What term is used to describe the energy required to remove an electron from an atom?

• Nuclear energy

• Excitation energy

• Ionization energy

• Electron affinity

Which orbital is added in the second electron shell?

• f-orbital

• d-orbital

• p-orbital

• s-orbital

What is the electron configuration for hydrogen?

• 1s2 2s2 2p6 3s2 3p6 4s2 3d6

• 1s1

• 2s2 2p5

• 1s2 2s2 2p6

What is the order of filling orbitals according to the diagonal rule?

• 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s

• 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p

• 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s

• 1s, 2s, 2p, 3s, 3p, 4s, 3d, 4p, 5s, 4d, 5p, 6s, 4f, 5d, 6p, 7s, 5f, 6d, 7p

What is the energy associated with adding an electron to an atom called?

• Nuclear energy

• Ionization energy

• Electron affinity

• Excitation energy

What is the shape of an electron excitation around the nucleus called?

• Orbit

• Wave-particle duality

• Standing wave

• Harmonic resonance

What is the electron configuration for iron?

• 1s2 2s2 2p6 3s2 3p6 4s2 3d6

• 1s2 2s2 2p6 3s2 3p6 4s2 3d10

• 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d6

• 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10