Temperature & Solubility Lab



Temperature & Solubility Lab

Hypothesis

Name

INTRODUCTION

The amount of solute that dissolves in a solvent depends on several factors. You have all had experience with making solutions like Kool-Aid (, lemonade, and saltwater. You know that stirring or shaking the solution will help the solute to dissolve faster in the water (solvent).

Information about other factors that influence the dissolving rate and solubility can be found in your textbook. Use the index to find the pages that contain information on solutions and solubility.

QUESTIONS: 1. If we heat the water (solvent) when trying to dissolve a solute, will the amount of time it takes to dissolve be changed?

(e.g., Would a gram of sugar dissolve at the same speed in cold water as in hot water?)

2. Does the temperature of the water (solvent) affect the amount of solute that will dissolve in a given amount of the solvent?

(e.g., Would hot water dissolve more grams of sugar than cold water?)

3. Does the type of solvent affect the amount of solute that will dissolve in a given solvent at a given temperature?

(e.g., Would a gram of sugar dissolve as well in alcohol as in water?)

Write your hypotheses and the reason for each of your hypotheses below.

Support your hypothesis by quoting information from your science text and the page number(s) on which it can be found.

Question #1

Hypothesis _____

Reasoning (Why do you think your hypothesis is correct?)

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|Quotations from the science book or other sources that support my reasoning. |Page # |

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Hypothesis (continued)

Question #2

Hypothesis _____

Reasoning (Why do you think your hypothesis is correct?)

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|Quotations from the science book or other sources that support my reasoning. |Page # |

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Question #3

Hypothesis _____

Reasoning (Why do you think your hypothesis is correct?)

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|Quotations from the science book or other sources that support my reasoning. |Page # |

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