3034689
Descripción
Test por Dodong Aleta, actualizado hace más de 1 año
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Creado por Dodong Aleta
hace más de 9 años
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Pregunta 1
Pregunta
It is the science that describes matter - its properties, the changes it undergoes, and the energy changes accompanying those processes.
Respuesta
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Chemastry
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Chemestry
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Chemistry
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Chemostry
Pregunta 2
Pregunta
It is anything that has mass and occupies space.
Respuesta
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Energy
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Inertia
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Matter
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Chemical Engineering
Pregunta 3
Pregunta
It is defined as the capacity to do work or to transfer heat.
Respuesta
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Energy
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Inertia
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Matter
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Chemical Engineering
Pregunta 4
Pregunta
It is the energy possessed by an object by virtue of its motion.
Respuesta
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Internal energy
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Kinetic energy
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Potential energy
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Mr. Pure Energy, Gary V.
Pregunta 5
Pregunta
It is the energy possessed by an object because of its position, condition, or composition.
Respuesta
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Internal Energy
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Kinetic Energy
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Potential Energy
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Mr. Pure Energy, Gary V.
Pregunta 6
Pregunta
There is no observable change in the quantity of matter during a chemical reaction or during a physical change.
Respuesta
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The Law of Conservation of Matter
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The Law of Conservation of Energy
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The Law of Conservation of Matter and Energy
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The Law of Definite Proportions
Pregunta 7
Pregunta
Energy cannot be created or destroyed in a chemical reaction or in a physical change. It can only be converted from one form to another.
Respuesta
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The Law of Conservation of Matter
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The Law of Conservation of Energy
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The Law of Conservation of Matter and Energy
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The Law of Definite Proportions
Pregunta 8
Pregunta
The combined amount of matter and energy available in the entire universe is fixed.
Respuesta
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The Law of Conservation of Matter
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The Law of Conservation of Energy
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The Law of Conservation of Matter and Energy
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The Law of Definite Proportions
Pregunta 9
Pregunta
A compound may also be defined as a pure substance consisting of two or more different elements in a fixed ratio. This observation is called __.
Respuesta
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The Law of Conservation of Matter
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The Law of Conservation of Energy
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The Law of Conservation of Matter and Energy
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The Law of Definite Proportions
Pregunta 10
Pregunta
He suggested that all matter is composed of tiny, discrete, indivisible particles that he called atoms.
Respuesta
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John Dalton
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Democritus
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Niels Bohr
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Albert Einstein
Pregunta 11
Pregunta
He tried to explain why matter behaves in such systematic ways as those expressed in the Law of Conservation of Mass, and the Law of Definite Proportions.
Respuesta
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John Dalton
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Democritus
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Niels Bohr
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Albert Einstein
Pregunta 12
Pregunta
1 amu =
Respuesta
Pregunta 13
Pregunta
It is the number of protons in the nucleus of an atom (symbol Z).
Respuesta
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Atomic Number
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Mass Number
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Atomic Mass
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Nucleon Number
Pregunta 14
Pregunta
These are properties that depend on the amount of material examined.
Respuesta
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Intensive Properties
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Extensive Properties
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Both Intensive and Extensive Properties
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None of the above
Pregunta 15
Pregunta
These are properties that do not depend on the amount of material examined.
Respuesta
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Intensive Properties
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Extensive Properties
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Both Intensive and Extensive Properties
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None of the above
Pregunta 16
Pregunta
All chemical properties are __.
Respuesta
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intensive properties
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extensive properties
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both intensive and extensive properties
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None of the above
Pregunta 17
Pregunta
It is a combination of two or more pure substances in which each substance retains its own composition and properties.
Respuesta
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Compound
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Mixture
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Tincture
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Carbuter
Pregunta 18
Pregunta
The most easily recognized mixture in which different proportions of the sample have recognizably different properties is called a __.
Respuesta
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homogeneous mixture
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heterogeneous mixture
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compound
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element
Pregunta 19
Pregunta
A/An __ is a substance that can be decomposed by chemical means into simpler substances, always in the same ratio by mass. Meanwhile, a/an __ is a substance that cannot be decomposed into simpler substances by chemical changes.
Respuesta
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compound element
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element compound
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solution element
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solution compound
Pregunta 20
Pregunta
IUPAC stands for __.
Respuesta
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Intergovernmental Union of Pure and Applied Chemistry
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Intergovernmental Union for Pure and Applied Chemistry
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International Union of Pure and Applied Chemistry
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International Union for Pure and Applied Chemistry
Pregunta 21
Pregunta
Which of the following common prefixes used in the SI and Metric systems is incorrect?
Respuesta
Pregunta 22
Pregunta
It relates to how closely a measured value agrees with the correct value.
Respuesta
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Accuracy
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Precision
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Significant Figures
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None of the above
Pregunta 23
Pregunta
It refers to how closely individual measurements agree with one another.
Respuesta
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Accuracy
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Precision
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Significant Figures
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None of the above
Pregunta 24
Pregunta
The __ of a substance (for solids and liquids) is the ratio of its density to the density of water, both at the same temperature.
Respuesta
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Apparent Specific Gravity
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Specific Gravity
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Specific Density
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Specific Volume
Pregunta 25
Pregunta
He was a Swedish astronomer who developed the Celcius temperature scale, formerly known as the centigrade temperature scale.
Respuesta
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Anders Celcius
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Andrew Celcius
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Anderson Celcius
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Adrian Celcius
Pregunta 26
Pregunta
He was a german instrument maker who developed the Fahrenheit temperature scale.
Respuesta
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Garry Fahrenheit
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Gerard Fahrenheit
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Gabriel Fahrenheit
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Gordon Fahrenheit
Pregunta 27
Pregunta
It is the amount of heat required to raise the temperature of one gram of a substance by one degree Celcius with no change in phase.
Respuesta
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Heat Capacity
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Specific Heat
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Specific Energy
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Enthalpy
Pregunta 28
Pregunta
It is the amount of heat required to raise its temperature by one degree Celcius.
Respuesta
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Heat Capacity
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Specific Heat
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Specific Energy
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Enthalpy
Pregunta 29
Pregunta
When two objects at different temperatures are brought into contact, heat flows from high temperature to low, until the two are at the same temperature. The two objects are then in __.
Respuesta
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balance
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kinetic equilibrium
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steady state
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thermal equilibrium
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