Chemistry Regents Exam August 2022 8. Hydrogen sulfide, H2S, is classified as a (1) compound with atoms in a fixed proportion (2)...

Chemistry Regent Exam August 2022 7. Compared to the number of electron shells and radius of an aluminum atom in the ground state, a...

Chemistry Regent Exam August 2022 6. Which Group 15 element is classified as a metal? (1) N (2) P (3) As (4) Bi Explanation: Refer to the...

Chemistry Regents Exam August 2022 All atoms of an element have the same (1) mass number (2) atomic mass (3) number of neutrons (4)...

Chemistry Regents Exam August 2022 4. Which phrase describes two atoms that contain the same number of protons but a different number of...

Chemistry Regent Exam August 2022 3. In the ground state, which shell of a potassium atom has an electron with the greatest amount of...

2. In the wave-mechanical model of an atom, an orbital is defined as (1) a region of the most probable neutron location (2) a region of...

August 17, 2022 Chemistry Regent Exam 1. What is the number of protons in an atom with the electron configuration of 2-5? (1) 5 (2) 2 (3)...

Rules on how to determine the number of significant figures? All non-zero digits are significant. This means all numbers:...

Which sample of matter can be separated into two different substances by physical means? (1) liquid bromine (2) gaseous propane (3) solid...