Flame Test

The video explores how fireworks produce different colors due to the properties of chemicals, specifically metal salts. An experiment is conducted using a Bunsen burner and various metal salts to observe the colors they emit when heated. The science behind this phenomenon is explained, highlighting how electrons in atoms release energy as light. The video also touches on how noble gases produce colors when an electric current is passed through them, leading to the creation of neon lights.

What is the primary reason fireworks can display a variety of colors?

• The shape of the fireworks

• The type of fuse used

• The properties of certain chemicals

• The altitude at which they explode

Which metal salt produces a yellow flame when heated?

• Copper chloride

• Barium chloride

• Lithium chloride

• Sodium chloride

What color does lithium chloride produce in a flame test?

• Yellow

• Red

• Blue-green

• White

How do elements emit light when heated to high temperatures?

• By cooling down rapidly

• By changing their atomic structure

• By releasing energy as photons

• By absorbing light

Why do different elements emit different flame colors?

• Due to their unique atomic structures

• Because of their size

• Because of their weight

• Due to their temperature

Which noble gas glows bright red when an electric current is passed through it?

• Krypton

• Xenon

• Argon

• Neon

How many unique colors can be created by mixing different gases in neon lights?

• 200

• 150

• 100

• 50