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Lab #3 - Physical and Chemical Changes - Pre-lab
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Course
Introduction to Chemistry (CHEM& 121)
6 Documents
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Highline College
Academic year: 2019/2020
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Lab 3: Physical and Chemical Changes CHEM& 121 Andrewsky Your Name: ___ Pre-lab grade: _________/
Lab 3: Physical and Chemical Changes
PRE-LAB QUESTIONS
- (4 pts) In your own words, define the terms physical change and chemical change. Provide an example
of each that is not present in this lab handout.
Physical change Chemical change
Definition: Definition:
- Only change the appearance of substance - change the entire substance with a new chemical for Formula
Example: Example
- Mixing sand and water -Burning wood
- Boiling water - cooking an egg
- (3 pts total – 0 pts each) Classify each process as a chemical or physical change.
A. Baking a cake: Chemical Change
B. Heating wax so that it melts: Physical change
C. Mixing a teaspoon of instant coffee with hot water: Physical change
D. The following representation:
- (3 pts total – 0 pts each) Classify each of the following as a physical property or chemical property.
A. Blue color: Physical property
B. Density: Physical property
C. Flammability: Chemical property
D. Melting point: physical property
Green River College – updated 19 April 2021 Page 1 of 2
Lab 3: Physical and Chemical Changes CHEM& 121 Andrewsky
Green River College – updated 19 April 2021 Page 2 of 2
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Lab #3 - Physical and Chemical Changes - Pre-lab
Course: Introduction to Chemistry (CHEM& 121)
6 Documents
Students shared 6 documents in this course
University: Highline College
Was this document helpful?
Lab 3: Physical and Chemical Changes CHEM& 121
Andrewsky
Your Name: ___ Pre-lab grade: _________/10
Lab 3: Physical and Chemical Changes
PRE-LAB QUESTIONS
1. (4 pts) In your own words, define the terms physical change and chemical change. Provide an example
of each that is not present in this lab handout.
Physical change Chemical change
Definition: Definition:
- Only change the appearance of substance - change the entire substance with a new chemical for
Formula
Example: Example
- Mixing sand and water -Burning wood
- Boiling water - cooking an egg
2. (3 pts total – 0.75 pts each) Classify each process as a chemical or physical change.
A. Baking a cake: Chemical Change
B. Heating wax so that it melts: Physical change
C. Mixing a teaspoon of instant coffee with hot water: Physical change
D. The following representation:
3. (3 pts total – 0.75 pts each) Classify each of the following as a physical property or chemical property.
A. Blue color: Physical property
B. Density: Physical property
C. Flammability: Chemical property
D. Melting point: physical property
Green River College – updated 6 May 2021 Page 1 of 2
