Flame Tests

CC U4: Flame Test Lab

By Jolene Kayser

1. Clash of the Titan- Historic Context

2. Ground State vs. Excited State

3. Safety

4. Lab execution

5. Post Lab Questions

6. Time to work on RERUN

Multiple Choice

An atom in the ______________ is more stable.

• Ground state

• Excited State

Multiple Choice

This image shows

• The ground state for nitrogen

• The ground state for carbon

• An excited state for carbon

• An excited state for nitrogen

Multiple Choice

A photon is "matter"

• True

• False

Multiple Choice

The most important concern in this lab is...

• finding some way blame any mistakes on your partners
• being very careful not to burn yourself, your partners, or the school down
• not irritating me

Multiple Choice

The flame test color for strontium is

• blue

• green

• yellow

• red

Multiple Choice

When a solution containing copper ions is heated in a flame it gives off this color

• red

• yellow

• blue/green

• purple

Emission spectrums are how we know what is all over the universe. Through telescopes and sophisticated instruments we can collect these emission spectrums and find the compositions of other stars, nebulas, and comets.

These spectra are unique to each element, so we can identify the elements present. ​

Atom's "fingerprints"​

​Emission Spectrums

Some text here about the topic of discussion

Multiple Choice

Each element emits a characteristic pattern of light energies, called the _____ _____, which is useful for identifying the element.

• emission spectrum

• rainbow

• electron pattern

• light energy

Multiple Choice

What element is in the unknown?

• He

• O2

• Ne

• Ar

• Xe

Multiple Choice

An emission spectrum is produced when an electron moves from one energy level

• into the nucleus

• to a higher energy level

• to another position in the same sublevel

• to a lower energy level

Multiple Choice

When heated, electrons are ____________.

• annoyed

• irritated

• excited

• angered

Multiple Choice

If an electron moves from n=4 to n=2 it ____

• absorbs energy

• releases energy

RERUN Requirements

RERUN: Write a lab conclusion that includes the at least _ of the following words. Underline/highlight the words. 

Energy Level, Electron, Qualitative Observation, Quantitative Observation, Ground State, Excited State, Electromagnetic Spectrum, Emission Spectrum, Photon, Bohr diagram, Endothermic, Exothermic.

Include at least 2 diagrams or models