Fireworks experiment

What interesting colour is produced by burning potassium sulfate in ethanol?

• purple

• green

• yellow

• red

Tags

NGSS.MS-PS1-2

What interesting colour is produced by burning copper sulfate in ethanol?

• lilac
• green
• red

• yellow

What interesting colour is produced by burning lithium chloride in ethanol?

• Purple
• Bright blue
• Bright red
• Yellow

Tags

NGSS.MS-PS1-2

Why can copper show two colours (blue/green) when burnt in its ionic form?

• Because of its two ions copper (I) and copper (II)

• because it depends on its concentration

• because it depends on the fuel

• because it depends on the flame temperature

Tags

NGSS.MS-PS1-2

For what reason can iron burn with sparks in iron whool?

• it's a special kind of iron

• because of its large surface area exposed to oxygen

• because of its small surface area exposed to oxygen

• because it is a fuel

Why do we need to stir the metal mixtures when burning them?

• the metallic compounds don't dissolve well in ethanol

• it makes the flames taller

• to make the reaction go faster

• to add more contact with oxygen

Tags

NGSS.MS-PS1-2

NGSS.MS-PS3-3

If you see a green fireworks in the sky, what metal could be in the fireworks?

• copper

• lithium

• strontium

• potassium

What is the role of ethanol in our experiment?

• bring some liquid

• it acts as a fuel for the combustion reaction

• it acts as an oxidizer for the combustion reaction

• it makes the colours brighter

In your firework project, do you think you will be able to explain how your firework works for the oral presentation?

• Yes, no problem

• Yes, but it may be hard

• No, it's too hard

• No, because I don't want to try.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS3-5