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What is the first step in completing the scientific method?
make observations and ask questions
How do you know that your problem or question is valid
the problem must be testable by experiment
When is a hypothesis created?
before the experiment is performed
What are the two kinds of variables that you need to identify in your experiments?
independent and dependent
What is the independent variable?
the variable you purposely manipulate
What is the dependent variable?
the variable that is not changed
What is the controlled or constant variable
the variable that is being observed
How many controlled variable can you have in an experiment
as many as you like
This statement would be which part of the scientific method? " There is so much snow outside!"
observation
How many independent variables can you have during an experiment
only 1
What is the control group
the group that is used for comparison
quantitative or qualitative? Number of eggs in a carton
quantitative
Quantitative or Qualitative? Smoothness of the eggs in a carton
qualitative
true or false. For an organism to be considered a living thing, it must have ALL the characteristics of life
true
Water is a ....
polar molecule
True or False. Water is a solute
What is the positive particle in the nucleus of an atom?
proton
What particle in an atom has no charge
neutron
What is matter?
anything that has mass and takes up space
What is the smallest unit of an element
atom
Which of the following is not an element
carbon dioxide
Why is it important for all scientists to use the same measuring system?
So that data can be effectively communicated and experiments may be replicated
Who is Linda Buck?
Scientist who studied our sense of smell
Name 3 characteristics of living things
answers will vary :)
Who is William Perkin?
British Chemist who created a synthetic purple dye