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