CHEM 103 EXAM 1 (UNLV) QUESTIONS
AND ANSWERS WITH COMPLETE
SOLUTIONS 100% CORRECT
GUARANTEED SUCCESS!!!
Term: Chemistry A: ✔️✔️ The branch of science that investigates the makeup,
internal arrangement, characteristics, and transformative reactions of matter.
Term: Matter A: ✔️✔️ Any physical substance that occupies space and
constitutes the material world around us.
Term: The Three Physical States of Matter A: ✔️✔️ Matter primarily exists
in three distinct forms: Solid, Liquid, and Gas.
Term: Solid A: ✔️✔️ A state of matter defined by having a fixed, rigid shape
and a specific, unchanging volume.
Term: Liquid A: ✔️✔️ A state of matter that maintains a constant volume but
lacks a fixed shape, allowing it to adapt to the form of its container.
Term: Gas A: ✔️✔️ A state of matter that possesses neither a definite shape nor
a fixed volume, expanding to fill whatever space is available.
Term: Physical Properties A: ✔️✔️ These are traits that can be seen or
calculated without altering the fundamental nature or identity of the substance
(such as color, mass, or boiling point).
Term: Chemical Properties A: ✔️✔️ These characteristics define a substance's
capacity to undergo a specific change that results in the creation of an entirely
new substance (such as flammability or acidity).
Examples of physical properties -ANSWER ✔️✔️Shape, Color, melting point,
and physical state.
A penny that is round shaped, an orange-red color, a solid and a shiny luster.
Are these physical or chemical properties? -ANSWER ✔️✔️Physical
, What is a physical change? -ANSWER ✔️✔️Its state or its appearance will
change but its composite remains the same.
Particle move in random directions but are sufficiently attracted to each other
to maintain a definite volume, although not a rigid structure. -ANSWER
✔️✔️Liquid
Water as a _____takes the ______ of its container. -ANSWER ✔️✔️Liquid;
Shape
Strong attractive forces hold particles such as atoms or molecules close
together. The particles are arranged in such a rigid pattern that only vibrate
slowly in fixed position. -ANSWER ✔️✔️Solid
What is a chemical change? -ANSWER ✔️✔️When an original substance is
converted into 1 or more NEW substances, which has different chemical &
physical properties.
Particles are far apart, have little attraction to each other and move at high
speeds, taking shape and volume of its container. -ANSWER ✔️✔️Gas
What is an atom? -ANSWER ✔️✔️Basic unit of matter that consists of a dense
central nucleus surrounded by a cloud of negatively charged electrons.
Water boiling is what kind of physical state? -ANSWER ✔️✔️Change of state
Freezing from liquid water to Ice is what kind of physical state? -ANSWER
✔️✔️Change of state
Dissolving sugar in water is what kind of physical state? -ANSWER
✔️✔️Change of appearance
Hammering gold ingot into shiny gold leaf is what kind of physical state? -
ANSWER ✔️✔️Change of shape
Cutting paper into tiny pieces of confetti is what kind of physical state? -
ANSWER ✔️✔️Change of size
AND ANSWERS WITH COMPLETE
SOLUTIONS 100% CORRECT
GUARANTEED SUCCESS!!!
Term: Chemistry A: ✔️✔️ The branch of science that investigates the makeup,
internal arrangement, characteristics, and transformative reactions of matter.
Term: Matter A: ✔️✔️ Any physical substance that occupies space and
constitutes the material world around us.
Term: The Three Physical States of Matter A: ✔️✔️ Matter primarily exists
in three distinct forms: Solid, Liquid, and Gas.
Term: Solid A: ✔️✔️ A state of matter defined by having a fixed, rigid shape
and a specific, unchanging volume.
Term: Liquid A: ✔️✔️ A state of matter that maintains a constant volume but
lacks a fixed shape, allowing it to adapt to the form of its container.
Term: Gas A: ✔️✔️ A state of matter that possesses neither a definite shape nor
a fixed volume, expanding to fill whatever space is available.
Term: Physical Properties A: ✔️✔️ These are traits that can be seen or
calculated without altering the fundamental nature or identity of the substance
(such as color, mass, or boiling point).
Term: Chemical Properties A: ✔️✔️ These characteristics define a substance's
capacity to undergo a specific change that results in the creation of an entirely
new substance (such as flammability or acidity).
Examples of physical properties -ANSWER ✔️✔️Shape, Color, melting point,
and physical state.
A penny that is round shaped, an orange-red color, a solid and a shiny luster.
Are these physical or chemical properties? -ANSWER ✔️✔️Physical
, What is a physical change? -ANSWER ✔️✔️Its state or its appearance will
change but its composite remains the same.
Particle move in random directions but are sufficiently attracted to each other
to maintain a definite volume, although not a rigid structure. -ANSWER
✔️✔️Liquid
Water as a _____takes the ______ of its container. -ANSWER ✔️✔️Liquid;
Shape
Strong attractive forces hold particles such as atoms or molecules close
together. The particles are arranged in such a rigid pattern that only vibrate
slowly in fixed position. -ANSWER ✔️✔️Solid
What is a chemical change? -ANSWER ✔️✔️When an original substance is
converted into 1 or more NEW substances, which has different chemical &
physical properties.
Particles are far apart, have little attraction to each other and move at high
speeds, taking shape and volume of its container. -ANSWER ✔️✔️Gas
What is an atom? -ANSWER ✔️✔️Basic unit of matter that consists of a dense
central nucleus surrounded by a cloud of negatively charged electrons.
Water boiling is what kind of physical state? -ANSWER ✔️✔️Change of state
Freezing from liquid water to Ice is what kind of physical state? -ANSWER
✔️✔️Change of state
Dissolving sugar in water is what kind of physical state? -ANSWER
✔️✔️Change of appearance
Hammering gold ingot into shiny gold leaf is what kind of physical state? -
ANSWER ✔️✔️Change of shape
Cutting paper into tiny pieces of confetti is what kind of physical state? -
ANSWER ✔️✔️Change of size
