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CHEM 103 UWL EXAM 1 QUESTIONS
AND ANSWERS WITH COMPLETE
SOLUTIONS 100% CORRECT RATED
A+
Q: What is the scientific term for anything that possesses mass and occupies physical space? A: ✔️ ✔️ Matter
Q: What are the fundamental substances that make up all matter? A: ✔️ ✔️ Elements
Q: What do we call the submicroscopic particles that act as the primary building blocks of matter and form molecules when bonded together? A: ✔️ ✔️ Atoms
Q: Which two factors determine the specific characteristics and properties of a substance? A: ✔️ ✔️ The chemical makeup (composition) and the spatial organization (structure) of its atoms.
Q: What are the two primary methods used to categorize matter? A: ✔️ ✔️ By its physical form (solid, liquid, or gas) and its chemical nature (element, compound, or mixture).
Q: Which state of matter is easily compressed and lacks a specific shape or volume, expanding to fill its container entirely? A: ✔️ ✔️ Gas distilled volume (independent of container), no specific shape, fills the shape of the portion it occupies, incompressible - ANSWER ✔️✔️ liquid
definite shape and volume, incompressible - ANSWER ✔️✔️ solids
matter WITHOUT variable composition - ANSWER ✔️✔️ pure substance
invariable composition from sample to sample, uniform characteristics/properties - ANSWER ✔️✔️ pure substances (matter without variable composition)
a pure substance that is separable into similar substances - ANSWER ✔️✔️ compound
a pure substance that is not separable into similar substances - ANSWER ✔️✔️ element
matter with variable composition - ANSWER ✔️✔️ mixture
variable composition and composed of multiple components, nonuniform characteristics/properties - ANSWER ✔️✔️ mixture
what are the two types of mixtures? - ANSWER ✔️✔️ heterogeneous and homogeneous
nonuniform throughout (ex- paint, wet sand) - ANSWER ✔️✔️ heterogeneous
uniform throughout (ex- kool aid, wine) - ANSWER ✔️✔️ homogeneous
each component retains its individual chemical and physical properties then the difference in those properties can be used to ______________ - ANSWER ✔️✔️ separate
absolute scale because there are no negative numbers - ANSWER ✔️✔️ kelvin
equal sized units as kelvin - ANSWER ✔️✔️ Celsius
what is the formula to convert celcius to kelvin? - ANSWER ✔️✔️ t(k)= t(c) +
what is the formula to convert Fahrenheit to celcius? - ANSWER ✔️✔️ t(c)= t(f)- 32/ 1.
G, 10^9, 1,000,000,000 - ANSWER ✔️✔️ giga
M, 10^6, 1,000,000 - ANSWER ✔️✔️ mega
K, 10^3, 1,000 - ANSWER ✔️✔️ kilo
D, 10^-1, 0.1 - ANSWER ✔️✔️ deci
C, 10^-2, 0.01 - ANSWER ✔️✔️ centi
m, 10^-3, 0.001 - ANSWER ✔️✔️ milli
10^-6, 0.000001 - ANSWER ✔️✔️ micro
10^-9, 0.000000001 - ANSWER ✔️✔️ nano
cm^3 = how many mL? - ANSWER ✔️✔️ 1
is density and intensive or extensive property? - ANSWER ✔️✔️ intensive
if matter is uniform throughout and cannot be seperated into other substances by physical processes, but can be decomposed into other substances by chemical processes, it is a what? - ANSWER ✔️✔️ compound
a one degree temperature difference is the smallest on the _______ temperature scale. - ANSWER ✔️✔️ fahrenheit
matter is composed of tiny indivisible particles (atoms), matter is infinitely divisible - ANSWER ✔️✔️ two philosophies of matter
can matter be created or destroyed? - ANSWER ✔️✔️ no
in a given compound the relative numbers and types of atoms are constant - ANSWER ✔️✔️ definite proportions
if two elements, A and B, combine to form more than one compound, the masses of B that can combine with a given mass of A are in a ratio of small whole numbers - ANSWER ✔️✔️ multiple proportions
produced when a high voltage is applied between two electrodes, within a evacuated tube - ANSWER ✔️✔️ catnode ray
catnode rays are tiny particles with an electric charge, measure force required to deflect the ray - ANSWER ✔️✔️ thomson
