Coloured Flame

Topics: Color, Light, Sodium chloride Pages: 7 (1196 words) Published: September 1, 2009

|Secondary 2 | Shela Septania Usadi |


Table of Contents

Part 1: Abstract1
Part 2: Introduction1

Color Of Fire2

Colored Flame2

Part 3: A Simple Experiment, Green Flames5
The Materials5

The Method5

A Higher Explanation5

Part 4: Multicolored Fire6
The Materials6

The Method6

Part 5: Uses Of Colored Fire7
Part 6: Effects Of Colored Fire7
part 7: Bibliography8

Part 1: Abstract

Fire is an important source of light and energy. It usually has the color of red, orange, yellow and white. What about other colors? Is it possible to have a fire with a green flame or a violet flame? What are the uses of these colored flames? Are they dangerous? We will find out the answers in this report.

Part 2: Introduction


Fire is basically a chemical reaction between the oxygen in the atmosphere and a type of fuel. Fire is man’s biggest contribution to science during the pre-historic era. It may already be used as early as 1.4 million years ago. It is a very important source of light and heat, especially during the night when we cannot see the sun. It is also the first form of portable light and heat in history.

Color Of Fire

Generally, the color of fire is red, orange, yellow, blue and white. It is depending on the fuel used. When using a Bunsen burner, the color of the flame depends on how much oxygen is used.

Colored Flame

So, how to make a flame change its color? Simple.

The fact is, when burned, different chemicals burns in different colors. Example, boric acid or borax contains the element boron. When burned, any chemical containing the element boron would burn green flames.

All we have to do is add a chemical to the fuel and the chemical’s atomic emission spectra will affect frequencies to the current light’s visible light radiation- causing the flame to change color.

Flame coloring is a good way to show how chemicals change when heated and how they also change the matter around them. Salts are commonly used in flame coloring.

Below is a table showing what color of flame the element would produce when burned.


|Symbol |Name |Color | |As |Arsenic |Blue | |B |Boron |Bright green | |Ba |Barium |Pale/Apple green | |Ca |Calcium |Brick red | |Cs |Caesium |Blue – Violet | |Cu(I) |Copper(I) |Blue | |Cu(II) |Copper(II) (non-halide) |Green | |Cu(II) |Copper(II) (halide) |Blue-green | |Fe |Iron |Gold | |In |Indium |Blue | |K |Potassium |Lilac | |Li |Lithium |Red | |Mn(II) |Manganese(II) |Yellowish green | |Mo |Molybdenum |Yellowish green | |Na |Sodium |Intense yellow | |P |Phosphorus |Pale bluish green | |Pb |Lead |Blue | |Rb |Rubidium |Red-violet | |Sb |Antimony |Pale green | |Se |Selenium |Azure blue | |Sr...
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