2nd Edition Exam Question/Answer Graded A+
2024/2025
Subatomic particle carrying a negative charge - ✔️✔️Electron
Number of electrons in the outermost shell of an atom with 15 electrons - ✔️✔️5
Innermost shell of an atom - ✔️✔️Holds 2 electrons
Electrically neutral atom with atomic number 8 and mass number 17 has - ✔️✔️8 protons
What predicts the element to which an atom belongs? - ✔️✔️Total number of protons
Four most common elements comprising 96% of the body's mass - ✔️✔️Oxygen,
nitrogen, hydrogen, carbon
Atom of iron with atomic number 26 - ✔️✔️Iron has 26 protons
Atomic number represents the number of - ✔️✔️Protons in an atom
Contributes to the calculation of the mass number - ✔️✔️Sum of protons and neutrons
Number of protons in an isotope of nitrogen with atomic number 7 and mass number 14
- ✔️✔️7
Carbon-13 - ✔️✔️Isotope of carbon with a mass number of 13
Solid blood cells settling out of liquid blood plasma - ✔️✔️Blood is a suspension
Atoms that satisfy the octet rule - ✔️✔️Inert
Inert atom - ✔️✔️Atom with filled valence shell
Atom with 3 electrons in its valence shell - ✔️✔️Atomic number of 13
Two or more atoms of the same element that are chemically combined - ✔️✔️Molecules
Na+ - ✔️✔️Ion
Ionic bonds result from - ✔️✔️Transfer of electrons from a metal atom to a nonmetal atom