The digestion process starts in the _____. esophagus stomach small intestine mouth

Which of the following statements is true?Nonmetals tend to gain electrons.
Metals tend to lose electrons.
Atoms have the natural tendency to fill their outermost shells.
All of the above.

Calculate the number of grams of CH_3COOH in the vinegar.

Producers are generally found at the beginning of a food chain. Whichstatement best explains why this is true? *
1. Producers are usually smaller in size than consumers.
2. Producers do not rely on other organisms for food.
3. There are always more consumers than producers in food chains.

Select all that apply. A beta particle:

1.) is electromagnetic energy
2.) is an electron
3.) has zero charge
4.) is emitted from the nucleus
5.) has a +2 charge
6.)has a -1 charge

Which statement correctly describes two forms of oxygen, O2 and O3?(1) They have identical molecular structures and identical properties.
(2) They have identical molecular structures and different properties.
(3) They have different molecular structures and identical properties.
(4) They have different molecular structures and different properties.

The temperature at which a substance boils is an example of a physical property.a. True
b. False