grade 8 lesson 2

metal oxides are

• basic

• acidic

• amphoteric

Metals react with water to form ______gas.

• Nitrogen

• Oxygen

• Hydrogen

• Ozone

co2 is ..........

• acidic oxide

• basic oxide

aluminium oxide is

• acidic

• basic

• amphoteric

• inert

acidic oxides dissolve in water and form alkaline solution

• true

• false

co2 +h2o --------

• h2o

• h2co3

• hco3

all bases are alkalis

• true

• false

alkaline solution changes the color of violet litmus solution into

• red

• blue

• violet

• yellow