Definitions
What is a constant variable?
This variable stays the same throughout the whole experiment
Who discovered the subatomic particle that is positively charged?
Ernest Rutherford
Three different liquids are poured onto a board and a scientist records how long it takes each liquid to travel 30 cm.
What is the independent variable?
what is the three different liquids.
If I expose my plants to sunlight then my plants will grow because plants need sunlight for survival.
Dependent Variable: Amount of Sunlight
Not
Chemistry is the study of the composition of _____.
Matter
the variable that is measured
What is a dependent variable?
In an experiment, what a scientist measures or observes to see the effect is called the ___________.
dependent variable
If athletes drink Gatorade then they will run faster
What is the dependent variable
What is the athletes speed?
If scholars listen to trap music then they will act out more violently because trap music has violent lyrics
Dependent variable: Acting out violently
Dependent
What is the formula for Boyle's Law?
P1V1=P2V2
This is the changing variable in an experiment
What is an independent variable?
In an experiment, what the scientist changes is called the _____________.
independent variable
If I put more soap in my bathtub then more bubbles will form because soap causes forms bubbles in the presence of water.
What is the dependent and independent variable?
Dependent Variable: Bubbles forming in water
Independent Variable: Amount of soap.
If I drink redbull then I will be able to fly because redbull gives people wings.
Dependent Variable: Drinking redbull
Not
how many significant figures are there in 1200?
2,3, or 4
What is the constant variable in Gay-Lussac's Law?
Volume
This is a testable idea. "educated guess"
hypothesis
If you study for two hours everyday then your grades will increase because studying improves memory for test.
What is the Independent Variable and Dependent Variable?
Independent Variable: amount of time spent studying
Dependent Variable: Increase grades
the farther a ball drops, the higher it will bounce. Which is the dependent variable?
how high the ball will bounce
what is it called when something stays the same
constant
What is constant in Boyle's Law?
Temperature
Johnny tests how quickly rats gain weight. He keeps 3 different types of rats in 3 different cages at different temperatures and feeds them each a different diet. What is wrong with Johnny's experiment?
Too many variables that are unnecessary. The type of rats and the diet should be the same for all (controlled variable/constant)
Independent Variable: Amount of time spent practicing
Dependent Variable: Increased chance of winning a basketball game
What is the Hypothesis
If I spend more time practicing then my chances of winning basketball games will increase because practice makes perfect.
Is the dependent variable "How tall the plant grows" in a "does the type of fertilizer affect how tall a plant grows" experiment?
Yes
What is constant in Charles' Law?
Pressure