How Concentration Of Acid Effects The Rate Of The Reaction

1034 words - 5 pages

SCIENTIFIC METHOD
Extended Experimental Investigation (EEI)

Research question
· It is stated in the form of a question
· It needs to outline what the research is about

Introduction – theory review
· Gather information about the problem to be investigated. This will allow to make a good hypothesis and plan a good research/experiment
· The gathered information will be firstly generic then specific then more specific
· The focus will be on the research question
· Research in books, on websites, articles and more
· Always in-text reference the information

Checklist:
Check

Have you:

· Clearly identified the independent and dependent variables, and defined any terms as required


· Fully explained the science involved in the two variables


· Made clear statements about how the independent variable should affect the dependent variable, using evidence from secondary sources


· Used in-text references from quality sources as evidence for your statements

Aim
· States what the scope of this research is

Hypothesis
· Is a statement of what your research explains should occur in the experiment you are conducting.
· It is an If … and then … Statement
· It should be concise

Justification
· This explains your hypothesis, it should relate back to your Introduction and have in-text references

Checklist:
Check

Have you:

· Made a concise prediction of how the independent variable will affect the dependent variable. If applicable, use mathematical terms e.g. directly proportional, inversely proportional, exponential, etc.


· Clearly defended your hypothesis, with evidence from in-text references

Experimental design
Variables
Independent Variables
· This is the variable that is changed
· It is displayed on the left column on a table and on the X-axis on a graph

Dependent Variables
· This is the variable/s that are measured
· They are displayed in the right columns of a table
· They are displayed on the Y-axis of the graph

Control Variables
· These are variables that cannot be changed or modified. A fair test is one in which all variables are maintained constant except for the independent variable.

Uncontrolled Variables
· Scientists always endeavor to ensure no variable other than the independent variable should affect the dependent variable. However, this is not always possible. Then scientists will try to keep the effects of the uncontrolled variable to a minimum.
Reliability
· Consistency of your data can only be assessed if you do multiple trials. You should endeavor to do as many trials as your time permits.
Accuracy
· Accuracy has to do with two aspects
1. Your measuring equipment
2. Your method of using this equipment

Checklist:
Check

Have you:

· Identified the independent variable, dependent variable and the variables you need to control


· Indicated how you will change the independent variable and how...

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