Chemical Changes in Heated Pennies

The video demonstrates heating a 2012 penny in a flame at 600°F, leading to a chemical reaction with oxygen. As the penny heats, wrinkles form, indicating physical changes. Eventually, the zinc inside melts, allowing it to be poured out, which will be shown in the next video.

What is the initial temperature of the flame used to heat the penny?

• 500° Fahrenheit

• 600° Fahrenheit

• 800° Fahrenheit

• 700° Fahrenheit

What type of penny is used in the experiment?

• A 2000 penny

• A 2015 penny

• A 2010 penny

• A 2012 penny

What causes the penny to undergo a chemical change?

• Being a new penny

• The zinc content

• Reacting with oxygen in the air

• Absorbing energy from the flame

What visible change occurs on the penny as it heats up?

• It turns black

• It cracks

• Wrinkles form

• It starts to glow

What happens to the penny as the zinc inside melts?

• It evaporates

• It flops over

• It becomes solid

• It explodes