It is one thing, just baking soda
Mixture
No, it is a compound.
mixture
Noe, while baking soda and water on their own are compounds, together they are a mixture.
Baking powder is a mixture of backing soda and other compounds
no
heterogeneous
Baking soda is a pure substance, meaning that there is only one molecule and it's not a mixture of ingredients. Baking powder is a mixture, because it takes three different ingredients to make it.
Baking soda is a salt. Lemon juice is a mixture with an acidic pH.
Baking SodaBaking sodaBicarbonate of soda
Baking Soda is NOT a mixture. It's a compound called Sodium Bicarbonate. Its molecular formula is NaHCO3
by the addition and stirring of baking soda into the mixture