Water! That is... if you consider water a household item...
This is due to its two lone pairs. More info can be found at:
http://en.wikipedia.org/wiki/Molecular_geometry
Of course, one lone pair in a molecule with steric number of 3 works as well. (See VSEPR Model for more info)
Pencil
a bottle of soda ( 16 ounces)
Nothing because a millimeter is a unit of length not weight.
A common household item that is approximately equivalent to 1 foot is a standard ruler or yardstick, which typically measures 12 inches. Additionally, a typical A4 sheet of paper is about 11.7 inches long, making it close to a foot as well. Another item could be a standard dinner plate, which often has a diameter of around 10 to 12 inches.
A common household item that is approximately 1 foot long is a standard ruler. Many kitchen utensils, like a cutting board or a large serving spoon, can also be around this length. Additionally, a typical laptop is about 1 foot in width, making it another example.
A kilometer is a unit of measurement for distance and not a household item.
what household item is the shaped like a pyramid
Yes Plus Fabric Softener is a household item. Yodora Deodorant is a household item. Yellow peppers are a household item.
Table salt (sodium chloride) is a household item that is made from chlorine and sodium.
A bag of flour or sugar is a common household item that is around 5 pounds in weight.
now
...appliance?
Yes
A candle
Queen bed is a household item.
A toy xylophone is a household item.
A refrigerator.