CHM1025 Exam 1 Questions With
Accurate Answers
matter - ANSWER anything that occupies space and has mass
energy - ANSWER ______ is not matter because it does not occupy space or have
mass
pure substances and mixtures - ANSWER matter can be broken up into what two
groups
pure substances - ANSWER type of matter with uniform composition throughout
elements and compounds - ANSWER two types of pure substances
mixtures - ANSWER two or more substances without uniform composition
elements - ANSWER these cannot be broken down into smaller pieces
compounds - ANSWER made up of one or more elements
heterogeneous and homogeneous - ANSWER two different types of mixtures
solutions - ANSWER homogeneous mixtures are also called _________
homogeneous - ANSWER this type of mixture has a uniform composition
heterogeneous - ANSWER this type of mixture does not have a uniform
composition
homogeneous - ANSWER sugar water is an example of a _________ mixture
heterogeneous - ANSWER sand in water is an example of a _________ mixture
atoms - ANSWER smallest unit of an element that maintains properties of that
element
molecule - ANSWER when two or more atoms come together, they form a
________
gas - ANSWER physical state in which atoms are very loosely organized and
moving quickly; always fit the container they're in; higher energy
, liquid - ANSWER physical state in which atoms are fairly unorganized; atoms
flow around each other; fill as much of container as they can
solid - ANSWER physical state in which atoms are rigidly positioned; don't care
about shape of container; same volume
physical properties - ANSWER things that can be measured without changing
the object
physical properties - ANSWER hardness, density, mass, volume, melting point
are all examples of ________
mass - ANSWER measure of how much matter is in an object (measured in
grams)
volume - ANSWER measure of how much space something occupies
density - ANSWER ratio of an object's mass to volume
temperature - ANSWER measure of how much heat an object has (celsius and
kelvin)
0; 100 - ANSWER at what degree celsius does water freeze and boil?
0 K (-273.15 C) - ANSWER what is the lowest possible temperature?
chemical properties - ANSWER reactivity and chemical behavior of material
chemical changes - ANSWER a change involving the breaking and forming of
bonds between atoms
energy - ANSWER capacity to do work or transfer heat
kinetic energy - ANSWER energy of motion
potential energy - ANSWER energy an object has based on position (often stored
in bonds)
law of conservation of mass - ANSWER no measurable change in mass occurs
during a chemical reaction (1787)
law of definite proportions - ANSWER all samples of the same compound always
contain the same proportions by mass of the component elements (1797-1804)
Accurate Answers
matter - ANSWER anything that occupies space and has mass
energy - ANSWER ______ is not matter because it does not occupy space or have
mass
pure substances and mixtures - ANSWER matter can be broken up into what two
groups
pure substances - ANSWER type of matter with uniform composition throughout
elements and compounds - ANSWER two types of pure substances
mixtures - ANSWER two or more substances without uniform composition
elements - ANSWER these cannot be broken down into smaller pieces
compounds - ANSWER made up of one or more elements
heterogeneous and homogeneous - ANSWER two different types of mixtures
solutions - ANSWER homogeneous mixtures are also called _________
homogeneous - ANSWER this type of mixture has a uniform composition
heterogeneous - ANSWER this type of mixture does not have a uniform
composition
homogeneous - ANSWER sugar water is an example of a _________ mixture
heterogeneous - ANSWER sand in water is an example of a _________ mixture
atoms - ANSWER smallest unit of an element that maintains properties of that
element
molecule - ANSWER when two or more atoms come together, they form a
________
gas - ANSWER physical state in which atoms are very loosely organized and
moving quickly; always fit the container they're in; higher energy
, liquid - ANSWER physical state in which atoms are fairly unorganized; atoms
flow around each other; fill as much of container as they can
solid - ANSWER physical state in which atoms are rigidly positioned; don't care
about shape of container; same volume
physical properties - ANSWER things that can be measured without changing
the object
physical properties - ANSWER hardness, density, mass, volume, melting point
are all examples of ________
mass - ANSWER measure of how much matter is in an object (measured in
grams)
volume - ANSWER measure of how much space something occupies
density - ANSWER ratio of an object's mass to volume
temperature - ANSWER measure of how much heat an object has (celsius and
kelvin)
0; 100 - ANSWER at what degree celsius does water freeze and boil?
0 K (-273.15 C) - ANSWER what is the lowest possible temperature?
chemical properties - ANSWER reactivity and chemical behavior of material
chemical changes - ANSWER a change involving the breaking and forming of
bonds between atoms
energy - ANSWER capacity to do work or transfer heat
kinetic energy - ANSWER energy of motion
potential energy - ANSWER energy an object has based on position (often stored
in bonds)
law of conservation of mass - ANSWER no measurable change in mass occurs
during a chemical reaction (1787)
law of definite proportions - ANSWER all samples of the same compound always
contain the same proportions by mass of the component elements (1797-1804)
