Bath Bomb Experiment Question

[kevinplloyd]

My 4th grader is trying to determine which is the control, dependent and independent variables in this experiment, could someone help us out?
REGULAR RECIPIE

2oz Citric acid

4oz Baking Soda

2oz Corn Starch

2oz Epson Salt

1 TSP Water

1 TSP Vegetable oil

4 drops of Essential oil

BAKING SODA RECIPIE

2oz Citric acid

6oz Baking Soda

2oz Corn Starch

2oz Epson Salt

1 TSP Water

1 TSP Vegetable oil

4 drops of Essential oil

CITRIC ACID RECIPIE

4oz Citric acid

4oz Baking Soda

2oz Corn Starch

2oz Epson Salt

1 TSP Water

1 TSP Vegetable oil

4 drops of Essential oil

CORNSTARCH RECIPIE

2oz Citric acid

4oz Baking Soda

4oz Corn Starch

2oz Epson Salt

1 TSP Water

1 TSP Vegetable oil

4 drops of

[dcnick96]

Hello, and welcome to Science Buddies!

This sounds like a fun project. We would like for the student to take a first attempt at identifying your variables.

Independent variables are those you will change to see if it affects the outcome of your experiment.

Dependent variables are those that you’re measuring to see if their outcome changes due to changes in your independent variables.

Controlled variables are those you will keep constant so they don’t change the outcome you of your experiment (ie, they don’t affect your dependent variable)

You can read more about variables here.
https://www.sciencebuddies.org/science- ... /variables

Write back and give us your initial thoughts on variables, and we’ll go from there.

Good luck!