WGU D843 GENERAL CHEMISTRY 1 EXAM
WITH ACTUAL CORRECT QUESTIONS AND
VERIFIED DETAILED ANSWERS| CURRENTLY
TESTING VERSION | ALREADY GRADED
A+|EXPERT VERIFIED FOR GUARANTEED
PASS 2026-2027
Which information about an electron is provided by the principal quantum number?
The energy level of the electron and its distance from the nucleus
Which group of the periodic table represents the alkali metals?
Group 1
Which elements are known for diatomic molecules, covalent bonds, and high
reactivity?
Halogens
Which mass number is associated with the element containing 25 neutrons, 29 protons,
and 29 electrons?
54
A substance boils at 82∘C and freezes at 11∘C. What is the physical state of this
substance at 22∘C?
Liquid
What is one example of a property associated with stronger intermolecular forces?
Greater viscosity
What is one of the properties of covalent compounds, in general?
Poor electrical conductivity
1|Page
, What is one scenario that shows a physical change?
A person shreds paper into small pieces to destroy sensitive documents.
What is one example of a mixture?
Soil
What is an example of a substance classified as a pure substance?
Water (H2O)
How many atoms of hydrogen are needed to make 1,200 molecules of NH3?
3,600
Which contribution did John Dalton make to the understanding of atoms and elements?
He proposed the first modern atomic theory.
How did J.J. Thomson contribute to atomic theory?
He introduced subatomic particles and challenged the idea of atom invisibility.
Which contribution did Niels Bohr make to the understanding of atoms and elements?
He aided in the understanding of periodic trends based on specific energy levels for
electrons.
Which substance involves ionic bonds?
AlCl3
Which substance involves covalent bonds?
O2
Which substance involves metallic bonds?
Mg
Which element, when part of an ionic bond, is likely to gain an electron?
Bromine
Which geometry does SO2 have?
2|Page
WITH ACTUAL CORRECT QUESTIONS AND
VERIFIED DETAILED ANSWERS| CURRENTLY
TESTING VERSION | ALREADY GRADED
A+|EXPERT VERIFIED FOR GUARANTEED
PASS 2026-2027
Which information about an electron is provided by the principal quantum number?
The energy level of the electron and its distance from the nucleus
Which group of the periodic table represents the alkali metals?
Group 1
Which elements are known for diatomic molecules, covalent bonds, and high
reactivity?
Halogens
Which mass number is associated with the element containing 25 neutrons, 29 protons,
and 29 electrons?
54
A substance boils at 82∘C and freezes at 11∘C. What is the physical state of this
substance at 22∘C?
Liquid
What is one example of a property associated with stronger intermolecular forces?
Greater viscosity
What is one of the properties of covalent compounds, in general?
Poor electrical conductivity
1|Page
, What is one scenario that shows a physical change?
A person shreds paper into small pieces to destroy sensitive documents.
What is one example of a mixture?
Soil
What is an example of a substance classified as a pure substance?
Water (H2O)
How many atoms of hydrogen are needed to make 1,200 molecules of NH3?
3,600
Which contribution did John Dalton make to the understanding of atoms and elements?
He proposed the first modern atomic theory.
How did J.J. Thomson contribute to atomic theory?
He introduced subatomic particles and challenged the idea of atom invisibility.
Which contribution did Niels Bohr make to the understanding of atoms and elements?
He aided in the understanding of periodic trends based on specific energy levels for
electrons.
Which substance involves ionic bonds?
AlCl3
Which substance involves covalent bonds?
O2
Which substance involves metallic bonds?
Mg
Which element, when part of an ionic bond, is likely to gain an electron?
Bromine
Which geometry does SO2 have?
2|Page
