7338831
Descripción
Test por Cecilia Bui, actualizado hace más de 1 año
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Creado por Cecilia Bui
hace casi 8 años
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Pregunta 1
Pregunta
[blank_start]biochemistry[blank_end] - the study of the processes that take place in organisms
Respuesta
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biochemistry
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organic chemistry
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inorganic chemistry
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physical chemistry
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analytical chemistry
Pregunta 2
Pregunta
[blank_start]physical chemistry[blank_end] - concerned with the mechanism, rate, and energy transfer that occurs when matter undergoes a change
Respuesta
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physical chemistry
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analytical chemistry
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biochemistry
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organic chemistry
Pregunta 3
Pregunta
[blank_start]analytical chemistry[blank_end] - the study of the composition of matter
Respuesta
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analytical chemistry
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physical chemistry
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biochemistry
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organic chemistry
Pregunta 4
Pregunta
Which field of science studies the composition and structure of matter?
Respuesta
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physics
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biology
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chemistry
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geology
Pregunta 5
Pregunta
The study of chemicals that, in general, do not contain carbon is traditionally called what type of chemistry?
Respuesta
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bio
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inorganic
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physical
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analytical
Pregunta 6
Pregunta
Which of the following would a chemist be most likely to study?
Respuesta
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a leaf floating on water
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a leaf changing color in autumn
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a leaf being blown by the wind
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a leaf sinking in water
Pregunta 7
Pregunta
Which of the following statements is false?
Respuesta
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Knowledge of chemistry allows the public to make informed decisions.
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Studying chemistry ensures that officials make correct choices in funding technology.
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Knowledge of chemistry helps prepare people for careers in soil science.
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Chemistry explains many aspects of nature.
Pregunta 8
Pregunta
After developing a plan, effective problem solving always involves doing what with that plan?
Respuesta
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evaluating it
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implementing it
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analyzing it
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doing calculations
Pregunta 9
Pregunta
A central concept of the kinetic theory, one of the "big ideas" of chemistry, is the belief that
Respuesta
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for every reaction there is an equal and opposite reaction.
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chemical reactions involve processes in which reactants produce products.
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the particles in matter are in a state of constant motion.
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every chemical process uses or produces energy, often in the form of heat.
Pregunta 10
Pregunta
Which of the following was a major contribution to chemistry by Antoine Lavoisier?
Respuesta
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He showed that oxygen is required for material to burn.
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He demonstrated the presence of phlogiston in air.
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He encouraged scientists to form explanations based on philosophical arguments.
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He developed the science of alchemy.
Pregunta 11
Pregunta
In a chemical reaction, the type of products obtained is largely determined by which part of the reacting chemicals?
Respuesta
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protons
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electrons
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neutrons
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nuclei
Pregunta 12
Pregunta
A theory is a ___.
Respuesta
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proposed explanation for an observation
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well-tested explanation for a broad set of observations.
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summary of the results of many observations
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procedure used to test a proposed explanation
Pregunta 13
Pregunta
The variable that is observed during an experiment is called what type of variable?
Respuesta
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independent
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manipulated
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controlling
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responding
Pregunta 14
Pregunta
Collaboration and communication are very important in a science because __.
Respuesta
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most research problems are not very complex.
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most scientists have the knowledge to solve any scientific problem.
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they increase the likelihood of a successful outcome.
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they keep scientists from having to repeat experiments.
Pregunta 15
Pregunta
Which of these steps should always be followed for effective problem solving?
Respuesta
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buying a larger quantity of material than estimated
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performing metric conversions
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developing a plan and then implementing the plan
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using a trial-and-error approach then evaluating
Pregunta 16
Pregunta
The step that usually comes last in solving numeric problems is __.
Respuesta
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calculate
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measure
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evaluate
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analyze
Pregunta 17
Pregunta
How do conceptual problems differ from numeric problems?
Respuesta
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Solutions to conceptual problems involve analysis, while numeric solutions do not.
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Logic is not usually involved in solving numeric problems.
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A plan is necessary to solve numeric problems, but is not necessary for conceptual problems.
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Solutions to conceptual problems normally do not involve calculations.
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