Do Now - Hypothesis: Predict how heart rate changes (increase, decrease or stay the same) before and after exercise. Use evidence from the circulatory system and
heart rate to support Hypothesis. It’s for my living environments class

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.

0.88m hope i am correct : )