Chem 141 Chapter 1 Exam 2025
Questions and Answers
Law - --CORRECT ANSWER--describes an phenomenom; law tells you what
Theory - --CORRECT ANSWER--explains the phenomenom; theory tells you
why
Greeks - --CORRECT ANSWER--- Elements: Earth, fire, air, and water
- Atoms were thought to be in constant motion - based on
watching the movement of specks of dust in sunlight - and
that there was nothing or a "void" between them
-Atoms make up everything
Element - --CORRECT ANSWER--Molecules or atoms that has to be the same
Molecule - --CORRECT ANSWER--2 atoms can be same or different
Compound - --CORRECT ANSWER--2 or more atoms of different elements
Dalton's Atomic Theory - --CORRECT ANSWER--1. Elements are composed of
small
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, indivisible, indestructible particles
called atoms.
2. All atoms of an element are
identical and have the same mass
and properties.
3. Atoms of a given element are
different from atoms of other
elements.
4. Compounds are formed by
combinations of atoms of two or
more elements.
5. Chemical reactions are due to the
rearrangements of atoms; atoms
(matter) are neither created nor
destroyed during a reaction.
Elements are composed of small indivisible, indestructible particles called atoms - -
-CORRECT ANSWER--False (atoms are divisible)
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Questions and Answers
Law - --CORRECT ANSWER--describes an phenomenom; law tells you what
Theory - --CORRECT ANSWER--explains the phenomenom; theory tells you
why
Greeks - --CORRECT ANSWER--- Elements: Earth, fire, air, and water
- Atoms were thought to be in constant motion - based on
watching the movement of specks of dust in sunlight - and
that there was nothing or a "void" between them
-Atoms make up everything
Element - --CORRECT ANSWER--Molecules or atoms that has to be the same
Molecule - --CORRECT ANSWER--2 atoms can be same or different
Compound - --CORRECT ANSWER--2 or more atoms of different elements
Dalton's Atomic Theory - --CORRECT ANSWER--1. Elements are composed of
small
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 1
, indivisible, indestructible particles
called atoms.
2. All atoms of an element are
identical and have the same mass
and properties.
3. Atoms of a given element are
different from atoms of other
elements.
4. Compounds are formed by
combinations of atoms of two or
more elements.
5. Chemical reactions are due to the
rearrangements of atoms; atoms
(matter) are neither created nor
destroyed during a reaction.
Elements are composed of small indivisible, indestructible particles called atoms - -
-CORRECT ANSWER--False (atoms are divisible)
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 2
