A Chemical Sunset

INTRODUCTION

IN THIS LAB YOU WILL BE USING THE BASIC PRINCIPLES OF CHEMISTRY TO PRODUCE A CHEMICAL SUNSET IN A PLASTIC BAG.

FOR THIS LAB YOU WILL BE USING THE FOLLOWING CHEMICALS:

Ø CALCIUM CHLORIDE

Ø WATER

Ø PHENOL RED

Ø BTB

A CLASS DISCUSSION WILL BE UTILIZED TO DISCUSS CHEMICAL AMOUNTS AND THE LAB PROCEDURES THAT WILL BE USED TO CONDUCT THIS LAB.

PROCEDURES

ACQUIRE THE CORRECT AMOUNTS OF CHEMICALS AS PER TEACHER INSTRUCTIONS

DURING THIS LAB YOU WILL NEED TO USE THE GAS TRAPPING TECHNIQUE WITH A PLASTIC BAG.

PREPARE A HYPOTHESIS THAT IS BASED ON WHAT YOU BELIEVE THE EVENTS OF THE LAB WILL BE.

MAKE YOUR OBSERVATIONS OF THE CHEMICALS BEFORE YOU REACT THEM. BE SURE AND RECORD IF THE CHEMICALS ARE SUBSTANCES, MIXTURES, ETC. BE SURE AND RECORD ALL THE PHYSICAL AND CHEMICAL PROPERTIES OF THE CHEMICALS THAT YOU CAN.

CONDUCT THE EXPERIMENT PER TEACHERS INSTRUCTIONS. BE SURE TO RECORD YOUR OBSERVATIONS OF THE EVENTS OF THE LAB.

WHAT SHOULD BE IN YOUR ANALYSIS

Ø WRITE AN ANALYSIS OF YOUR LAB: (HELPFUL QUESTIONS TO ANSWER)

Ø WAS YOUR HYPOTHESIS CORRECT?

Ø HOW DID THE EVENTS OF THE LAB DIFFER FROM THAT HYPOTHESIS?

Ø WHAT WERE THE EVENTS OF THE LAB AS THOSE EVENTS RELATE TO CHEMISTRY VOCABULARY?

Ø DID YOUR GROUP MAKE ANY MISTAKES THAT MAY HAVE CHANGED THE RESULTS?