Chemistry 103 Exam 1- Washington State University
Questions With Correct Answers 2026
Gases - CORRECT ANSWER -A state of matter, have no fixed shape and take on the shape of the
space they're in. Most kinetic energy of the 3 phases.
Liquids - CORRECT ANSWER -A state of matter, fixed volume but assumes the shape of the
container. Intermediate kinetic energy
Solids - CORRECT ANSWER -A state of matter in which the object has a definite shape and
volume. Least kinetic energy.
pure substance - CORRECT ANSWER -Matter that are composed of only one type of particle.
Element - CORRECT ANSWER -A pure substance made of only one kind of atom
Ex. H (helium) or O (oxygen)
molecular elements - CORRECT ANSWER -Elements whose particles are multi-atom molecules
Ex. N2, H2, O2, and Cl2
Compound - CORRECT ANSWER -Substances composed of at least two different types of atoms
bonded together at their basic unit. Ex. H2O or NaCl
Mixtures - CORRECT ANSWER -Physical combinations of two or more pure substances.
homogeneous mixture - CORRECT ANSWER -A mixture in which substances are evenly
distributed throughout the mixture
, heterogeneous mixture - CORRECT ANSWER -A mixture that is not uniform in composition;
components are not evenly distributed throughout the mixture
Nucleus - CORRECT ANSWER -Dense core of an atom
Protons - CORRECT ANSWER -positively charged particles found in the nucleus
Neutrons - CORRECT ANSWER -the particles of the nucleus that have no charge
Electrons - CORRECT ANSWER -negatively charged subatomic particles
Isotopes - CORRECT ANSWER -Atoms of the same element that have different numbers of
neutrons
mass number - CORRECT ANSWER -the sum of the number of neutrons and protons in an
atomic nucleus
Ions - CORRECT ANSWER -atoms that have gained or lost electrons
Cations - CORRECT ANSWER -positively charged ions (left side of the periodic table/metals)
Anions - CORRECT ANSWER -negatively charged ions (right side of the periodic table/non-metals
and metaloids)
uncertainty principle - CORRECT ANSWER -A principle that says we can't ever know the position
and momentum of an electron with certainty.
Questions With Correct Answers 2026
Gases - CORRECT ANSWER -A state of matter, have no fixed shape and take on the shape of the
space they're in. Most kinetic energy of the 3 phases.
Liquids - CORRECT ANSWER -A state of matter, fixed volume but assumes the shape of the
container. Intermediate kinetic energy
Solids - CORRECT ANSWER -A state of matter in which the object has a definite shape and
volume. Least kinetic energy.
pure substance - CORRECT ANSWER -Matter that are composed of only one type of particle.
Element - CORRECT ANSWER -A pure substance made of only one kind of atom
Ex. H (helium) or O (oxygen)
molecular elements - CORRECT ANSWER -Elements whose particles are multi-atom molecules
Ex. N2, H2, O2, and Cl2
Compound - CORRECT ANSWER -Substances composed of at least two different types of atoms
bonded together at their basic unit. Ex. H2O or NaCl
Mixtures - CORRECT ANSWER -Physical combinations of two or more pure substances.
homogeneous mixture - CORRECT ANSWER -A mixture in which substances are evenly
distributed throughout the mixture
, heterogeneous mixture - CORRECT ANSWER -A mixture that is not uniform in composition;
components are not evenly distributed throughout the mixture
Nucleus - CORRECT ANSWER -Dense core of an atom
Protons - CORRECT ANSWER -positively charged particles found in the nucleus
Neutrons - CORRECT ANSWER -the particles of the nucleus that have no charge
Electrons - CORRECT ANSWER -negatively charged subatomic particles
Isotopes - CORRECT ANSWER -Atoms of the same element that have different numbers of
neutrons
mass number - CORRECT ANSWER -the sum of the number of neutrons and protons in an
atomic nucleus
Ions - CORRECT ANSWER -atoms that have gained or lost electrons
Cations - CORRECT ANSWER -positively charged ions (left side of the periodic table/metals)
Anions - CORRECT ANSWER -negatively charged ions (right side of the periodic table/non-metals
and metaloids)
uncertainty principle - CORRECT ANSWER -A principle that says we can't ever know the position
and momentum of an electron with certainty.
