Hello please help! Is Sodium Hydroxide an element, mixture, or compound?
Is carbonated water an element, mixture, or compound?
Thank you!

Carbonated water is a mixture,  

Explanation:

which means it contains two or more different chemicals.

Is Sodium Hydroxide an element, mixture, or compound?

An example would be placing sodium (Na) in water (H2O). Sodium creates a new chemical bond producing a new substance with new physical and chemical properties known as sodium hydroxide (NaOH). So, if a new chemical formula must be written after two or more substances combine it is not a mixture.

b) mutualism

hope this : )