CHALLENGE (EVALUATION) Directions:From the given paragraph, write the element/compound, its chemical formula and its

constituent elements.

In the lungs, oxygen (O2) from the air enters the blood. At the same time, the waste gas carbon dioxide

(CO2) leaves the blood and then leaves the body when you exhale. Some water (H20) also leaves the body

when you exhale, which is why mirrors get foggy when you breathe on them. This process of gas exchange

is what we call respiration.

ELEMENT/ COMPOUND

1. _________________ ______________ _________________

2. _________________ ______________ _________________

3. _________________
______________
_________________

CHEMICAL FORMULA

1. _________________ ______________ _________________

2. _________________ ______________ _________________

3. _________________
______________
_________________

CONSTITUENT ELEMENTS

1. _________________ ______________ _________________

2. _________________ ______________ _________________

3. _________________
______________
_________________​​​