WGU C 165 section 2 chemistry: lesson 1-8 Actual Exam Questions with verified Answers 2024/2025
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WGU C165
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WGU C165
WGU C 165 section 2 chemistry: lesson 1-8 Actual Exam Questions with verified Answers 2024/2025
Element: - correct answer a substance that is composed of a single type of atom, as defined by the number of protons in the nucleus
Compound: - correct answer a chemical that contains at least two ...
WGU C 165 section 2 chemistry: lesson 1-8
Actual Exam Questions with verified Answers
2024/2025
Element: - correct answer a substance that is composed of a
single type of atom, as defined by the number of protons in the
nucleus
Compound: - correct answer a chemical that contains at least
two different types of atoms in a fixed ratio
Chemical: - correct answer any substance that has a definite,
fixed chemical composition
Chemical bonds: - correct answer attractive forces that hold
atoms together
Molecule: - correct answer an exact number of atoms of one
type of element or more than one type of element that are held
together by covalent bonds
Organic compound: x - correct answer components that are not
evenly mixed
Heterogeneous mixture: - correct answer components that are
not evenly mixed
,Homogeneous mixture: - correct answer components that are
evenly mixed and cannot be differentiated with the unaided eye
Pure substance: - correct answer a chemical that contains only
one type of element or compound (also referred to as a
"substance")
Mixture: - correct answer a combination of two or more pure
substances
Describe the macroscopic and microscopic properties of solids,
liquids, and gases
Solids - correct answer macroscopic properties:
Shape: have a definite shape that does not change unless
physically altered.
Volume: have a definite volume.
Density: typically high density compared to liquids and gases.
Compressibility: not easily compressed.
Microscopic properties:
,Particle arrangement: particles are closely packed in a fixed,
orderly pattern.
Particle movement: particles vibrate in place but do not move
freely.
Interactions: strong intermolecular forces hold the particles
together.
Describe the macroscopic and microscopic properties of solids,
liquids, and gases
Liquids - correct answer macroscopic properties:
Shape: take the shape of their container but have a definite
volume.
Volume: have a definite volume.
Density: generally less dense than solids but more dense than
gases.
Compressibility: slightly compressible but not much.
Microscopic properties:
, Particle arrangement: particles are close together but not in a
fixed arrangement.
Particle movement: particles move around each other, allowing
liquids to flow.
Interactions: moderate intermolecular forces that are weaker
than in solids but stronger than in gases.
Describe the macroscopic and microscopic properties of solids,
liquids, and gases
gases - correct answer macroscopic properties:
Shape: expand to fill the shape of their container.
Volume: do not have a definite volume and can be compressed to
occupy less space.
Density: low density compared to solids and liquids.
Compressibility: highly compressible.
Microscopic properties:
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