Scientific Method
How many steps are in the scientific method?
6 or 7
What variable stays the same during an experiment?
Control variable
A synonym for SP is...?
Waterlock
Who was the mascot for Alka-Seltzer?
Speedy
a possible answer to a problem or question. Also called an educated guess.
Hypothesis
What is the first step in the scientific method?
Question
Which variable does a scientist change on purpose?
Manipulated (Independent) Variable
How much can SP absorb in tap water?
300x its weight
What is a more common term for Sodium Bicarbonate?
Baking Soda
Using our 5 senses to gather information is the definition for what?
Observation
A hypothesis has what TWO words included always?
IF and THEN
What is the independent variable (cause) in this experiment?
"Which type of metal, copper or aluminum, conducts heat faster?"
the type of metal
Sodium polyacrylate has a ___________ membrane
Semi-Permeable
What was the manipulated variable in the Alka Seltzer experiment?
The temperature of the water
What variable is measured or observed during an experiment?
Dependent variable
Which step in the scientific method deals with checking the results of the experiment against the expected outcome?
Conclusion
Justin wants to determine the effect of fertilizer on the growth of grass. What is the dependent variable?
growth of the grass
What is used to reverse the chemical reaction when SP absorbs water?
Table salt
What was the dependent variable in the Alka Seltzer experiment?
The dissolving rate
An interpretation based on past experiences and observations is the definition of?
Inference
What is the last step in the scientific method?
Report
The higher the temperature in an oven, the faster a cake will bake.
What is the independent variable?
The temperature in the oven
The water molecules use ________ to move through sodium polyacrylate's membrane.
Osmosis
What is Alka-Seltzer used for?
Alka-Seltzer is used to neutralize an upset stomach
An experiment where all the variables stay the same except one is also known as?
a controlled experiment