WGU D425 Chemistry ACTUAL EXAM STUDY
GUIDE 2026 COMPLETE QUESTIONS WITH
CORRECT DETAILED ANSWERS ||
100% GUARANTEED PASS
<RECENT VERSION>
1. Intesnive property - ANSWER An intensive property is one that does not
depend on the mass of the substance or system.
Heat, color, boiling, point melting, point
2. extensive property - ANSWER a property that depends on the amount of
matter in a sample
Weight, volume, mass
1kg - ANSWER 1000g
1 m - ANSWER 100 cm
1 km - ANSWER 1000 m
3. inversely related - ANSWER one variable decreases as the other increases
4. What is the expected charge of monoatomic ions made from elements in
group 16? - ANSWER Elements in Group 16 of the periodic table (also
, known as the oxygen group or chalcogens) typically gain 2 electrons to
achieve a full outer shell.
Therefore:
The expected charge of monoatomic ions from Group 16 elements is −2.
Examples:
Oxygen (O) → O²⁻
Sulfur (S) → S²⁻
Selenium (Se) → Se²⁻
5. tetrahedral angle - ANSWER 109.5
6. Chemistry - ANSWER The study of matter, its properties, and how it
changes.
7. Matter - ANSWER Anything that has mass and takes up space.
8. Atom - ANSWER The smallest unit of matter that keeps the properties of an
element.
9. Protons - ANSWER Positive charge (+), in the nucleus.
10.Neutrons - ANSWER No charge, in the nucleus.
11.Electrons - ANSWER Negative charge (−), outside the nucleus in energy
levels.
,12.Atomic Number - ANSWER Number of protons in an atom. (Identifies the
element!)
13.Mass Number - ANSWER Protons + Neutrons.
14.Isotopes - ANSWER Atoms of the same element with different numbers of
neutrons.
15.Ions - ANSWER Atoms that gain or lose electrons.
16.Anion - ANSWER Gain electron = negative.
17.Cation - ANSWER Lose electron = positive.
18.Electron Shells - ANSWER Electrons orbit in layers called shells.
19.Valence Electrons - ANSWER Electrons in the outermost shell; determine
chemical reactivity.
20.Periodic Table Organization - ANSWER Arranged by atomic number;
shows trends in properties.
21.Atomic Size - ANSWER Decreases left to right, increases down.
22.Ionization Energy - ANSWER Increases left to right, decreases down.
23.Electronegativity - ANSWER Increases left to right, decreases down.
, 24.Chemical Bond - ANSWER A force holding atoms together to form
compounds.
25.Ionic Bonds - ANSWER Transfer of electrons between metals and
nonmetals.
26.Covalent Bonds - ANSWER Sharing of electrons between nonmetals.
27.Metallic Bonds - ANSWER Sea of shared electrons among metal atoms.
28.Polarity - ANSWER Unequal sharing of electrons creates partial charges.
29.Molecule Shapes (VSEPR Theory) - ANSWER Electron pairs repel,
determining shape.
30.Bond Strength - ANSWER Triple > Double > Single.
31.Bond Length - ANSWER Single > Double > Triple.
32.Intermolecular Forces - ANSWER Weak attractions between molecules.
33.States of Matter - ANSWER Solid → Liquid → Gas → Plasma.
34.Solid - ANSWER Fixed shape and volume.
35.Liquid - ANSWER Fixed volume, no fixed shape.
GUIDE 2026 COMPLETE QUESTIONS WITH
CORRECT DETAILED ANSWERS ||
100% GUARANTEED PASS
<RECENT VERSION>
1. Intesnive property - ANSWER An intensive property is one that does not
depend on the mass of the substance or system.
Heat, color, boiling, point melting, point
2. extensive property - ANSWER a property that depends on the amount of
matter in a sample
Weight, volume, mass
1kg - ANSWER 1000g
1 m - ANSWER 100 cm
1 km - ANSWER 1000 m
3. inversely related - ANSWER one variable decreases as the other increases
4. What is the expected charge of monoatomic ions made from elements in
group 16? - ANSWER Elements in Group 16 of the periodic table (also
, known as the oxygen group or chalcogens) typically gain 2 electrons to
achieve a full outer shell.
Therefore:
The expected charge of monoatomic ions from Group 16 elements is −2.
Examples:
Oxygen (O) → O²⁻
Sulfur (S) → S²⁻
Selenium (Se) → Se²⁻
5. tetrahedral angle - ANSWER 109.5
6. Chemistry - ANSWER The study of matter, its properties, and how it
changes.
7. Matter - ANSWER Anything that has mass and takes up space.
8. Atom - ANSWER The smallest unit of matter that keeps the properties of an
element.
9. Protons - ANSWER Positive charge (+), in the nucleus.
10.Neutrons - ANSWER No charge, in the nucleus.
11.Electrons - ANSWER Negative charge (−), outside the nucleus in energy
levels.
,12.Atomic Number - ANSWER Number of protons in an atom. (Identifies the
element!)
13.Mass Number - ANSWER Protons + Neutrons.
14.Isotopes - ANSWER Atoms of the same element with different numbers of
neutrons.
15.Ions - ANSWER Atoms that gain or lose electrons.
16.Anion - ANSWER Gain electron = negative.
17.Cation - ANSWER Lose electron = positive.
18.Electron Shells - ANSWER Electrons orbit in layers called shells.
19.Valence Electrons - ANSWER Electrons in the outermost shell; determine
chemical reactivity.
20.Periodic Table Organization - ANSWER Arranged by atomic number;
shows trends in properties.
21.Atomic Size - ANSWER Decreases left to right, increases down.
22.Ionization Energy - ANSWER Increases left to right, decreases down.
23.Electronegativity - ANSWER Increases left to right, decreases down.
, 24.Chemical Bond - ANSWER A force holding atoms together to form
compounds.
25.Ionic Bonds - ANSWER Transfer of electrons between metals and
nonmetals.
26.Covalent Bonds - ANSWER Sharing of electrons between nonmetals.
27.Metallic Bonds - ANSWER Sea of shared electrons among metal atoms.
28.Polarity - ANSWER Unequal sharing of electrons creates partial charges.
29.Molecule Shapes (VSEPR Theory) - ANSWER Electron pairs repel,
determining shape.
30.Bond Strength - ANSWER Triple > Double > Single.
31.Bond Length - ANSWER Single > Double > Triple.
32.Intermolecular Forces - ANSWER Weak attractions between molecules.
33.States of Matter - ANSWER Solid → Liquid → Gas → Plasma.
34.Solid - ANSWER Fixed shape and volume.
35.Liquid - ANSWER Fixed volume, no fixed shape.
