Understanding Atomic Emission and Spectrums

What happens to a lithium atom when it is heated or electrified?

• It enters an excited state.

• It loses electrons.

• It becomes a different element.

• It remains in the ground state.

When an excited atom returns to its ground state, what does it release?

• Photons

• Neutrons

• Protons

• Electrons

Which color of light is typically associated with high energy photons in fireworks?

• Green

• Red

• Yellow

• Orange

What is the primary purpose of a flame test in chemistry?

• To measure temperature

• To detect the presence of metal ions

• To test for non-metal elements

• To create colorful displays

Which element emits a blue flame during a flame test?

• Arsenic

• Sodium

• Calcium

• Strontium

What is an emission spectrum often compared to?

• A shadow

• A mirror

• A fingerprint

• A rainbow

Why do we see multiple lines in the emission spectrum of hydrogen?

• Hydrogen has multiple electrons.

• The spectrum is distorted.

• It is a combination of many hydrogen atoms.

• Each line represents a different atom.

Which element's emission spectrum includes yellow photons?

• Hydrogen

• Lithium

• Helium

• Boron

What can emission spectrums help scientists determine about distant stars?

• Their size

• Their temperature

• Their elemental composition

• Their age

Which color of light is associated with low energy photons?

• Violet

• Blue

• Red

• Green