Clear selection 2 points
Directions: Read the passage, then answer the questions that follow.
Digestion The diagram shows parts of the human body. These parts work
together to help you digest the food you eat. 5. Which term best
describes the entire group of parts that are labeled?
Tongue
Esophagus

14,16 18 reacts with group

answer: -

reaction:

na + cl ⇌ nacl

balanced chemical equation:

na + 2cl ⇌ nacl2

sodium + clorine goes to form sodium chloride (table salt).

the product is nacl2.

and the reactants are na and cl.

(note: if you don’t know what ⇌ means, read below: -

⇌(double head arrow) means reversible reaction).

c-14 is carbon-14, or radiocarbon.   it is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons.