I have a 10yo dd.
She can certainly strip a bed - in fact she is a pro at replacing a single duvet, and can make up her own bed. She showers on her own, including washing and conditioning her hair, and just this week has learned to care for her own earrings, taking them in and out (after piercing 6 weeks ago) and has been meticulous in cleaning them.
She can cook pasta/rice/noodles on the cooker, including draining them of hot water, make cups of tea and coffee, make toast, chop veggies, bake biscuits (with a bit of help re: the oven), boil potatoes and makes a mean chicken pie (with ready made pastry) !! SHe can microwave anything that requires it.
She can hoover, dust, clean the sink and bath (I don't let anyone else do the loo!), puts away the shopping, folds and puts away her own laundry, and I am teaching her to iron.
I am now in the process of replicating these skills with my 8yo ds, and will then start with dd2!!
Children are capable. Dh calls ours "junior slaves" when he wants help emptying the car etc (dd1 has been promoted recently to "senior slave").