Cambios químicos

The video tutorial explains chemical changes using everyday examples. It begins with a match being lit, illustrating how the substances in the match head change chemically when burned. The tutorial further explores chemical changes by discussing rust formation on iron and the burning of bread. It concludes by noting that chemical changes are constantly occurring in our bodies.

What happens to the match head when it is struck against the matchbox?

• It changes color and size, indicating a chemical change.

• It melts without any change in color.

• It becomes larger and retains its color.

• It remains unchanged.

What is the new substance formed when iron undergoes a chemical change?

• Copper

• Rust

• Silver

• Gold

What color is associated with the rust formed on iron?

• Purple

• Green

• Blue

• Orange

Which of the following is an example of a chemical change occurring in everyday life?

• Breaking glass

• Boiling water

• Burning bread

• Melting ice

What is happening inside your body right now according to the video?

• Mechanical changes

• Physical changes

• Chemical changes

• No changes