CHEMISTRY
LECTURE 2 SCIENTIFIC METHOD
NAME ____________________________
8-12-14
I CAN ___________________________________________________________________________________
________________________________________________________________________________________
The SCIENTIFIC METHOD is as ________________________________________________________________
_________________________________________________________________________________________
OVERVIEW OF THE SCIENTIFIC PROCESS
STEP 1: IDENTIFY A PROBLEM
_____________________ the world around you.


This is a question you _________________ know the answer to and can’t look up.
“_________” and “____________________________..” are good beginnings of scientific questions.
STEP 2: GATHER INFORMATION

Use _____________________ to do background research.

______________________________________________________________________________
______________________________________________________________________________
STEP 3A: FORMULATE A HYPOTHESIS
_______________________ to a question that __________________________.
Based on _________________________________.
“______” “______” or “____________” statement
STEP 3B: FORMULATE A NULL HYPOTHESIS
It’s very possible that a hypothesis will ________ be supported by the research.
An experiment also has a ______________________ – this is a statement that says there is _________________
________________________________ being studied in the experiment.
STEP 4: DEVELOP AN EXPERIMENT
An ______________________ is a procedure designed to _____________________________.
•
______________________________________________________________________.
Can take place in a ____________________ or in the _____________.
Involves a number of _____________________ – factors that can change the outcome of the experiment.
VARIABLES: MANIPULATED VARIABLE

The _____________________________ is the factor that the experimenter _________________ to
observe its effect(s).

Sometimes called the _____________________________.
VARIABLES: RESPONDING VARIABLE

Changes in response to the ________________ variable.

Is ___________________ in the experiment.

Sometime called the ________________________.
VARIABLES: CONSTANTS

All the factors in the experiments ________________________ are known as ________________.

_________________ except the ___________________ and _____________________ variables.

Keeps the experiment “___________”.
VARIABLES: CONTROL GROUPS

The ___________________ that you ____________________________________________.

Allows the experimenter to __________________________ of the manipulated variable.
STEP 5: RECORD AND ORGANIZE DATA

Write down _____________ and ________________.

_______________ destroy data!

Use a _________/________/_________ to _____________ your data.

_______________________ including manipulated and responding variables!
STEP 6: ANALYZE DATA
_______________ the data collected. Does it _________________ the hypothesis?
YES
NO
1. ________________________
1. _______________________
2. ________________________
2. _______________________