Q: What is released during an enthalpy reaction? Choices: - gold - precipitation - sound - heat A:
heat

Q: What is occasional chest pain known as? Choices: - cardiac arrest - arrhythmia - heart murmur - angina pectoris A:
angina pectoris

Q: Q: All of the monatomic ions have oxidation numbers equal to their? Choices: - atomic number - shape - atomic weight - charges A:
A: charges

Question: Q: Where do oceans absorb gases from? Choices: - stratosphere - wind - sunlight - atmosphere A:
Answer: atmosphere

*Question*
Q: What's the name for an atom that has gained or lost an electron? Choices: - an photon - isotope - neutrino - an ion A:
**Answer**
an ion

*Question*
Q: In what two ways are volcanic eruptions characterized? Choices: - minor and explosive - localized and general - non-explosive and serious - explosive and non-explosive A:
**Answer**
explosive and non-explosive