WGU D425 CHEMISTRY KEY TERMS 2026/2027 | INTRO TO CHEMISTRY
COMPLETE STUDY GUIDE | HIGH-YIELD TERMS & DEFINITIONS | EXAM PREP
| LATEST UPDATE
1. Anything that has mass and takes up space is defined as what?
WEIGHT
MATTER
COMPOUND
DENSITY
2. What is the term used to describe the energy of motion?
Potential energy
Chemical energy
Thermal energy
Kinetic energy
3. ____ is anything that takes up space and has mass.
Electricity
Matter
Power
Element
4. Describe the significance of an atom in the context of matter and chemical
properties.
An atom is the smallest unit of matter that retains the properties of
that matter, serving as the building block for all substances.
An atom is a collection of molecules that form a compound.
, An atom is a type of chemical bond between two elements.
An atom is a large particle that can be divided into smaller parts.
5. Describe the implications of the law of conservation of mass in a chemical
reaction.
In a chemical reaction, mass is lost as energy is released.
In a chemical reaction, products can weigh more than reactants.
In a chemical reaction, mass can be created from reactants.
In a chemical reaction, the total mass of reactants equals the total
mass of products.
6. If a new substance is discovered that has mass and occupies space, how
would it be classified in the field of chemistry?
It would be classified as a compound.
It would be classified as a chemical bond.
It would be classified as matter.
It would be classified as energy.
7. What is the smallest particle that has all of the properties of an element?
Neutron
Electron
Molecule
Atom
8. Describe the significance of a chemical formula in the context of molecular
composition.
, A chemical formula is irrelevant to understanding chemical reactions.
A chemical formula is used to describe the physical properties of a
substance.
A chemical formula indicates the types and numbers of atoms in a
molecule, providing essential information about its composition.
A chemical formula only shows the arrangement of atoms in a
molecule.
9. Describe the significance of the periodic table in the study of chemistry.
The periodic table is used to calculate the mass of molecules.
The periodic table shows only the metals and their properties.
The periodic table organizes elements by their properties and
atomic numbers, providing a framework for understanding chemical
behavior.
The periodic table lists compounds and their reactions.
10. What term describes the attraction between atoms that forms a molecule?
A molecular force
An ionic interaction
A chemical bond
A covalent link
11. Matter may be either a pure substance or a?
none of the above
gas
mixture
COMPLETE STUDY GUIDE | HIGH-YIELD TERMS & DEFINITIONS | EXAM PREP
| LATEST UPDATE
1. Anything that has mass and takes up space is defined as what?
WEIGHT
MATTER
COMPOUND
DENSITY
2. What is the term used to describe the energy of motion?
Potential energy
Chemical energy
Thermal energy
Kinetic energy
3. ____ is anything that takes up space and has mass.
Electricity
Matter
Power
Element
4. Describe the significance of an atom in the context of matter and chemical
properties.
An atom is the smallest unit of matter that retains the properties of
that matter, serving as the building block for all substances.
An atom is a collection of molecules that form a compound.
, An atom is a type of chemical bond between two elements.
An atom is a large particle that can be divided into smaller parts.
5. Describe the implications of the law of conservation of mass in a chemical
reaction.
In a chemical reaction, mass is lost as energy is released.
In a chemical reaction, products can weigh more than reactants.
In a chemical reaction, mass can be created from reactants.
In a chemical reaction, the total mass of reactants equals the total
mass of products.
6. If a new substance is discovered that has mass and occupies space, how
would it be classified in the field of chemistry?
It would be classified as a compound.
It would be classified as a chemical bond.
It would be classified as matter.
It would be classified as energy.
7. What is the smallest particle that has all of the properties of an element?
Neutron
Electron
Molecule
Atom
8. Describe the significance of a chemical formula in the context of molecular
composition.
, A chemical formula is irrelevant to understanding chemical reactions.
A chemical formula is used to describe the physical properties of a
substance.
A chemical formula indicates the types and numbers of atoms in a
molecule, providing essential information about its composition.
A chemical formula only shows the arrangement of atoms in a
molecule.
9. Describe the significance of the periodic table in the study of chemistry.
The periodic table is used to calculate the mass of molecules.
The periodic table shows only the metals and their properties.
The periodic table organizes elements by their properties and
atomic numbers, providing a framework for understanding chemical
behavior.
The periodic table lists compounds and their reactions.
10. What term describes the attraction between atoms that forms a molecule?
A molecular force
An ionic interaction
A chemical bond
A covalent link
11. Matter may be either a pure substance or a?
none of the above
gas
mixture
