January 2024 Chemistry Regents Questions 1-10 Question Preview (ID: 62915)


The Questions In This Practice Exam Are Thoughtfully Crafted To Assess Your Knowledge And Skills. They Cover A Range Of Topics And Formats, Offering A Valuable Opportunity For Self-assessment And Preparation. TEACHERS: click here for quick copy question ID numbers.

Which particles surround the nucleus of a neon atom?
a) electrons
b) neutrons
c) positrons
d) protons

Which conclusion was proposed as a result of an experiment during which some alpha particles were deflected while passing through a thin sheet of gold foil?
a) Atoms are hard, indivisible spheres.
b) Atoms have small, dense, positive nuclei.
c) Atoms contain negatively charged particles.
d) Atoms have electrons with wavelike properties.

The mass of each proton and each neutron is approximately equal to
a) 1 g
b) 1 mL
c) 1 u
d) 1 mol

Which statement describes the relationship between two electrons in an atom of magnesium in the ground state?
a) An electron in the first shell has the same amount of energy as an electron in the second shell.
b) An electron in the first shell has a greater amount of energy than an electron in the second shell.
c) An electron in the second shell has the same amount of energy as an electron in the third shell.
d) An electron in the third shell has a greater amount of energy than an electron in the second shell.

As an atom in the ground state changes to an atom in an excited state, the atom
a) absorbs energy
b) releases energy
c) increases in mass number
d) decreases in mass number

Which statement describes a chemical property of copper?
a) Copper has a red-orange color.
b) Copper can be flattened into sheets.
c) Copper reacts with oxygen.
d) Copper conducts an electric current.

At STP, two forms of solid carbon, diamond and graphite, have different properties because
a) diamond has a different percent composition than graphite
b) diamond has more electrons per atom than graphite
c) diamond has stronger hydrogen bonding than graphite
d) diamond has a different crystal structure than graphite

Which element in Period 2 has the highest first ionization energy?
a) boron
b) lithium
c) neon
d) nitrogen

Which phrase describes a specific compound?
a) can contain only one element
b) can be physically separated into elements
c) is composed of elements chemically combined in a definite ratio
d) is composed of elements mixed in proportions that can vary

Which type of chemical formula shows the arrangement of the atoms in a molecule?
a) empirical formula
b) general formula
c) molecular formula
d) structural formula

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