Question

Which of the changes are chemical changes?

Sugar is dissolved in water.

A warm soda bottle fizzes when opened.

The copper roof turns green over time.

Baking soda is dissolved in vinegar and bubbles form.

A fog appears on the windshield in cold weather.

Answer 1

two of them are chemical changes

Step-by-step explanation:

1.) the copper roof turns green over time: it forms a new substance which is the green deposit known as verdigris .

2.) baking soda is dissolved in vinegar and bubbles form: it forms a new substance which is carbon dioxide gas.

I hope it helps:)