______ is a proposed explanation for an observation.
What is hypothesis?
100
______ is the branch of chemistry that studies chemicals containing carbon.
What is organic chemistry?
100
Before there were chemists, _______ were studying matter.
What are alchemists?
100
Alchemists developed _____ and _____ for working with chemicals.
What are tools and techniques?
100
Effective problem solving always involves developing a ______.
What is a plan?
200
____ is anything that has mass and takes up space.
What is matter?
200
A _________ chemist is most likely to identify the type of paint chips found at the scene of a hit-and-run accident.
What is analytical chemist?
200
A _______ variable is the one that you change during an experiment.
What is a independent variable?
200
Low levels of lead in the blood can permanently damage the nervous system of ________.
What is children?
200
A ______ problem involves calculations.
What is a numeric problem?
300
_______ is the study of matter and the changes it undergoes.
What is chemistry?
300
A ________ chemist might study factors that affect breathing rates during exercise.
What is physical chemist?
300
A _______ is a well-tested explanation for a broad set of observations. (not proven).
What is a theory?
300
With the help from _______, chemists study matter from other bodies in the solar system, including rocks from the moon and photographs on the surface of Mars.
What is NASA?
300
In solving a numeric world problem, the steps are _____, ______, and _____.
What is analyze, calculate, and evaluate?
400
_____ ______ is research directed toward a practical goal or application.
What is applied chemistry?
400
A ______ chemist might explain how a lack of calcium can affect the growth and repair of bones.
What is an inorganic chemist?
400
A _____ ______ is a concise statement that summarizes the results of many observations and experiments.
What is scientific law?
400
_______ patented the design for his hook-and-loop tapes.
What is George de Mestral?
400
The steps for solving a conceptual problem are _____ and _____.
What is analyze and solve?
500
______ refers to the world of objects that can be seen only under magnification.
What is microscopic?
500
A ______ might study muscle contraction and digestion.
What is biochemist?
500
One logical approach to solving a scientific problem is the ______ _____.
What is scientific method?
500
_______ transformed chemistry from a science of observation to the science of measurement it is today.
What is Lavoisier?
500
It will take Jan _____ minutes to walk to and from an ice cream shop that is 6 blocks north of her hotel. Hint: 10 blocks=1mile; It takes her 20 minutes to walk 1 mile.