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CHEM 101-Straighterline Exam with correct answers 2024 £12.27
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CHEM 101-Straighterline Exam with correct answers 2024
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A substance in which the atoms or molecules are free to move relative to one another. It always assumes the shape and volume of its container. correct answers gas A substance in which the atoms or molecules pack closer than a gas, but are still able to freely move relative to one another. It ex...

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  • November 6, 2024
  • 5
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • chem 101 straighterline exam 1

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  • CHEM 101-Straighterline Ex
  • CHEM 101-Straighterline Ex

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CHEM 101-Straighterline Exam 1

A substance in which the atoms or molecules are free to move relative to one
another.assumes
always It the shape and volume of its container. correct
answers gas
A substance in which the atoms or molecules pack closer than a gas, but are
still able
freely to relative to one another. It exhibits a fixed volume, but not a
move
fixed shape.
correct answers
liquid
A substance in which the atoms or molecules are fixed at a specific position.
It fixed
a exhibits
volume and rigid shape. correct
answers solid
A solid that has atoms and molecules in a repeatable pattern.
correct answers
crystalline
solid
A solid whose atoms or molecules are not arranged in a specific
pattern. amorphous
answers correct
solid
A substance does not vary its composition within the substance nor between
samples
the sameofsubstance. correct answers pure
substance
A physical combination of substances in which each substance keeps its
own chemical
and physical properties. correct answers
mixture
A physical combination of substances of non-uniform composition.
correct answers
heterogeneous
mixture
A physical combination of substances of uniform composition. correct
answers
homogeneous
mixture
A pure substance that cannot be broken into component parts.
Examples
helium, include and oxygen. correct answers
nitrogen,
element
A pure substance made up of two or more elements. correct answers
compound
A quantitative observation. correct answers
measurement
Any division of a quantity that may be used in a measurement. correct
answers unit
The SI unit for length. correct answers
meter
The SI unit for time. correct answers
second

, The SI unit for mass. correct answers
kilogram
The standard unit of measurement used to count atoms. correct
answers mole
A unit system abbreviated as SI that is used by scientists. correct answers
International
System of
Units
A unit system of measurement used throughout the world. correct
answers metric
syste
m
A unit system of measurement mainly used in the United States.
correct answers
english
system
Changes the SI unit by a power of 10. correct answers prefix
multiplier
An English temperature unit system used mainly in the United States.
correct answers
fahrenhe
it
A combination of SI units. correct answers
derived units
A metric temperature unit system used throughout the world. correct
answers celsius
A derived unit defined as mass/volume. correct answers
density
A property that does not depend on the amount of a substance.
correct answers
intensive
property
A property that depends on the amount of a substance. correct answers
extensive
propert
y
A measurement that is repeatable in an experimental setup, within an
acceptable
of rangeanswers reliable
error. correct
measurements
How close a series of measurements are to each other. correct answers
precision
How close a series of measurements are to the actual value. correct
answers accuracy
A non-place-holding digit in any numerical measurement. correct answers
significant
digi
t
Rounding numerical data to the nearest power of 10 for rapid estimated
calculations.
correct answers order-of-magnitude
estimation
The force that holds atoms together in molecules and materials.
correct answers
chemical
bond

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