. Three students are asked to discuss why the CO2 produced from the reaction
rose upward out of the mouth of the test tube even though CO2 is denser than
air. Select the student that employs correct scientific reasoning.
Student 1: The reason the carbon dioxide rose despite being denser than air is because the heat
caused it to condense.
• Student 2: The carbon dioxide produced by decomposition of baking soda was able to rise above
the air because the oxygen in the test tube was consumed.
• Student 3: The carbon dioxide rose up because the heat expanded the gas and it became less
dense.
O Student 3
OStudent 1
O Student 2

the energy to form plasma comes from heat or electricity in the atmosphere!

sunny~ ☺

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.

level 4 to level 2 : ))