When you bake something completely from scratch... that is, not using a mix or any shortcuts.
Baking soda should not scratch your dentures as it contains no abrasive as does tooth paste.
To make homemade baking soda for baking, you cannot create it from scratch. Baking soda is a chemical compound that needs to be manufactured in a controlled environment. It is best to purchase baking soda from a store for your baking needs.
shear
You can try buffing the scratch with a paste made of baking soda and water, then rinse and dry the glasses. If the scratch remains, consider using a commercial glass scratch remover or visiting a professional to see if the scratch can be polished out.
The recipe for German chocolate cake from the Joy of Baking is linked below.
If you are baking stuffing from scratch, you would bake it at 350 degrees, for about 45 minutes or until golden.
Most likely you mean 'from scratch' cooking which means taking ingredients that aren't previously prepared and adding them together to create a dish. For example, biscuits made from Bisquick are not from scratch but biscuits where I measured out the flour, baking powder, etc. are
No, do not decrease the baking time when using a disposable tin. But as always, watch the cake and test for doneness when the edges pull away from the sides of the tin.
You can always prevent your baking sheets from getting dirty in the first place. Use parchment paper or foil to line the sheets. If it is already dirty, use a non-scratch scrubbing sponge.
I think women would rather like to make a cake from scratch unless they don't like baking.
Smells
Using a hand dough mixer for baking offers benefits such as better control over the dough's consistency, easier incorporation of ingredients, and a more hands-on baking experience.