The Effect Of Temperature On A Chemical Reaction

Describe what you understand by ‘independent variable’ and ‘dependent variable’ in a scientific study? ( 5 points) An independent variable is something you have control over, what you can choose and manipulate. It is a variable that stands alone and doesn’t change by other variables. Although in some cases, you may not be able to manipulate the independent variable. It could be already there and or fixed. A dependent variable is the variable that’s being tested in an experiment. If the experimenter changes the independent variable, the change in the dependent variable is observed and recorded. For example a scientist is testing the effect of light and dark on the behavior of moths by turning a light on and off. The independent variable is the amount of light and the moth’s reaction is dependent variable. A change in the independent variable (amount of light) directly causes a change in the dependent variable (moth

In laboratory experiments all variables are under the control of the researcher, the researcher will obtain their results from taking two groups which are identical. One group will be the control group and the other will be the experimental group. The researcher will then alter the independent variable in the experimental group to see if the variable that the researcher is investigating changes in any way when compared to the control group. If there is

Statement of Inquiry: What is the effect of changing a factor on the rate of chemical reaction?

1. For this experiment, what were the independent variable and the dependent variable? What were the constants?

Synthesis: Why is the average reaction rate faster or slower when the experimental variable changes? What factors may account for the differences between the average reaction times in your control group versus the experimental group? (2 pts.)

The purpose of this lab was to find out how the amount of time that has elapsed affect the position of the car away from the point of origin. Our hypothesis was if the time elapsed is longer, then the car is going to be further away from the point of origin. In this lab the independent variable-what you are changing is time. The dependent variable-what you are measuring is how far the car is from the point of origin after a certain amount of time (3 seconds, 6 seconds, and 9 seconds). The controls-things that stay the same throughout the whole lab is the car we used, the meter stick that we measured in centimeters with, and the 40 centimeters of tape that we used to mark the position of the car. Materials we used was a car, 40 centimeters of

* The Independent part is what you, the experimenter, changes or enacts in order to do your experiment.  The dependent variable is what changes when the independent variable changes - the dependent variable depends on the outcome of the independent variable.

2 The graph displayed above (Fig. 2) is a compilation of the data displayed by the reaction at each of the different temperatures. From this graph we can see the increasing rate of the reaction from 0ºC to Room temperature as we follow the positive slope of the graph. Following the peak during Room Temperature, we can observe a decrease in the rate of the reaction. This decrease continues from 37ºC to 65ºC, where the reaction appears to have slowed down even further.

A dependent variable is the variable which is affected by other variables which is the bubble solution. The diameter of each bubble was effected by which solution was used and how the bubble was blown. If you had a professional bubble blower blow 1 bubble and a baby blow a bubble the diameter would be different which is why the diameter is affected by the blower, which is why you the bubble blower should be one of your controls.

The independent variables are those that are changed throughout the experiment. In my experiment I am going to change the amount of egg white mixture on the ice cream (in my first experiment I put very little and the experiment didn’t work out). I will also be changing the type of ice cream. This will not affect the experiment but it will change the taste.

An independent variable is a variable that is manipulated and whose effect is being studied. The independent variable in this demonstration is the choices that each group had to pick from for their answer. A dependent variable is what changed due to the manipulation of the independent variable. The dependent variable in this demonstration was how the choices that each group had chose, or more specifically, how many people showed that they understood conservation and how many people did not.

A simple experiment such as using a placebo effect to convince patients Advil made their headache go away only manipulates one drug factor. This type of method is known as the independent variable because it is the one being manipulated and it can vary it independently. It is also the variable that is being studied. An example of an independent variable would be as followed, the individual’s gender, age, weight, and personality. In the experiment there is also a dependent variable. In psychology he dependent variable is the mental process or behavior that is measured. This variable may change due to response to manipulations of the independent variable. Examples of dependent variables in an experiment may be how much of the drug dosage was given and the time period in which the observations were

The independent variable for the experiment is the alcohol being burned. The dependent variable is determined by the results of the independent facto, therefore it is the energy which is being released through the combustion of the reaction. The final variable is the controlled or the constant variable. The controlled variable is a factor of the investigation that the conductor would prefer to keep constant through the experiment, the controlled variable is the volume of the water in the conical flask. The accuracy of the results will depend on all three of the variable, as they are a crucial part of the experiment.

The independent variable used in this experiment was the greenhouse and the air. The air temperature was changed by building a greenhouse that would trap the air inside (making it hotter or cooler). The dependant variable was the temperature because that was what we were measuring. Lastly, the controlled variables were time and the thermometers. The experiment was held over a constant

Variables are those entities that change their values during the experiment. Variables may be classified on their intended use, as