CHM1025 Exam 1 Newest 2026 Questions and
Correct Detailed Answers Already Graded A+
matter - CORRECT ANSWER-anything that occupies space and has mass
energy - CORRECT ANSWER-______ is not matter because it does not occupy
space or have mass
kinetic energy - CORRECT ANSWER-energy of motion
potential energy - CORRECT ANSWER-energy an object has based on position
(often stored in bonds)
law of conservation of mass - CORRECT ANSWER-no measurable change in
mass occurs during a chemical reaction (1787)
law of definite proportions - CORRECT ANSWER-all samples of the same
compound always contain the same proportions by mass of the component
elements (1797-1804)
,all matter is composed of atoms, atoms of the same element are identical in mass
and chemical properties/atoms of different elements have different masses and
different chemical properties, atoms are not created or destroyed in chemical
reactions, atoms combine in simple, fixed, whole number ratios to form
compounds - CORRECT ANSWER-points of daltons atomic theory
JJ thomson; cathode ray tube experiment - CORRECT ANSWER-who discovered
the electron and through what experiment
cathode ray tube experiment - CORRECT ANSWER-experiment in which JJ
Thomson noticed particles produced when an electric charge was applied to a CRT
were attracted from a negative electrode to a positive electrode
RA Millikan's oil drop experiment - CORRECT ANSWER-whose experiment
determines electron's tiny mass
plum pudding model - CORRECT ANSWER-thomson proposed which model of
the atom
ernest rutherford - CORRECT ANSWER-who conducted the gold foil
experiment (1911)
, pure substances and mixtures - CORRECT ANSWER-matter can be broken up
into what two groups
pure substances - CORRECT ANSWER-type of matter with uniform composition
throughout
elements and compounds - CORRECT ANSWER-two types of pure substances
mixtures - CORRECT ANSWER-two or more substances without uniform
composition
elements - CORRECT ANSWER-these cannot be broken down into smaller
pieces
compounds - CORRECT ANSWER-made up of one or more elements
heterogeneous and homogeneous - CORRECT ANSWER-two different types of
mixtures
solutions - CORRECT ANSWER-homogeneous mixtures are also called
_________
Correct Detailed Answers Already Graded A+
matter - CORRECT ANSWER-anything that occupies space and has mass
energy - CORRECT ANSWER-______ is not matter because it does not occupy
space or have mass
kinetic energy - CORRECT ANSWER-energy of motion
potential energy - CORRECT ANSWER-energy an object has based on position
(often stored in bonds)
law of conservation of mass - CORRECT ANSWER-no measurable change in
mass occurs during a chemical reaction (1787)
law of definite proportions - CORRECT ANSWER-all samples of the same
compound always contain the same proportions by mass of the component
elements (1797-1804)
,all matter is composed of atoms, atoms of the same element are identical in mass
and chemical properties/atoms of different elements have different masses and
different chemical properties, atoms are not created or destroyed in chemical
reactions, atoms combine in simple, fixed, whole number ratios to form
compounds - CORRECT ANSWER-points of daltons atomic theory
JJ thomson; cathode ray tube experiment - CORRECT ANSWER-who discovered
the electron and through what experiment
cathode ray tube experiment - CORRECT ANSWER-experiment in which JJ
Thomson noticed particles produced when an electric charge was applied to a CRT
were attracted from a negative electrode to a positive electrode
RA Millikan's oil drop experiment - CORRECT ANSWER-whose experiment
determines electron's tiny mass
plum pudding model - CORRECT ANSWER-thomson proposed which model of
the atom
ernest rutherford - CORRECT ANSWER-who conducted the gold foil
experiment (1911)
, pure substances and mixtures - CORRECT ANSWER-matter can be broken up
into what two groups
pure substances - CORRECT ANSWER-type of matter with uniform composition
throughout
elements and compounds - CORRECT ANSWER-two types of pure substances
mixtures - CORRECT ANSWER-two or more substances without uniform
composition
elements - CORRECT ANSWER-these cannot be broken down into smaller
pieces
compounds - CORRECT ANSWER-made up of one or more elements
heterogeneous and homogeneous - CORRECT ANSWER-two different types of
mixtures
solutions - CORRECT ANSWER-homogeneous mixtures are also called
_________
