Question

an atom can become an ion by losing electrons to or gaining electrons from another atom. ions are found in the compounds we use every day. this model shows how sodium and chlorine become ions in the formation of table salt, or sodium chloride (nacl). sodium chlorine + proton neutron electron complete the sentences to explain the model. sodium loses an electron, and chlorine gains an electron. so the sodium atom becomes a charged ion, and the chlorine atom becomes a negatively positively

Explanation:

Sodium has 11 protons and initially 11 electrons (neutral). When it loses 1 electron, it has 11 protons and 10 electrons, so the positive charge (protons) is greater than negative charge (electrons), making it a positively charged ion. Chlorine has 17 protons and initially 17 electrons (neutral). When it gains 1 electron, it has 17 protons and 18 electrons, so negative charge (electrons) is greater than positive charge (protons), making it a negatively charged ion. For the first blank (sodium's charge), since it loses an electron (loses negative charge), it becomes positively charged.

Answer:

positively