Chemical Reactions Vocabulary

Tells us that mass is never created nor destroyed only transformed.
1. Newton's Third Law of Motion
2. Law of Definite Proportions
3. Law of Conservation of Mass
4. Law of Conservation of Energy
A reaction that produces more energy than it uses.
1. Exoskeleton
2. Exothermic
3. Elmothermic
4. Endothermic
A reaction that uses more energy than it produces.
1. Endoskeleton
2. Exothermic
3. Elmothermic
4. Endothermic
An experimental system that traps the experiment, not allowing products to escape.
1. Closed System
2. Open System
3. Trapping Sytem
4. Escape System
The chemicals that interact to make a chemical reaction.
1. Reactors
2. Products
3. Producers
4. Reactants
The chemicals that are made in a chemical reaction.
1. Reactors
2. Products
3. Producers
4. Reactants
The reactant that is used up first in a reaction and causes the reaction to stop.
1. Limiting Reactant
2. Stopping reactant
3. By-product
4. Terminating reactant
Tells us that molecules and compounds exist in only one configuration. If you change the chemical formula you change the chemical.
1. Principle of Conservation of Mass
2. Law of Definite Predictions
3. Law of Conservation of Mass
4. Principle of Definite Proportions
An experimental setup that does not trap the products. It allows information to be lost.
1. Open system
2. Closed system
3. Open Experiment
4. Closed Experiment
A change that affects appearance, but not chemical composition.
1. Appearance Change
2. Metamorphosis
3. Physical Change
4. Chemical Change
Select all of the indicators that might tell you a chemical change has occured.
("Check Answers" is at the bottom of the page)
1. Cutting
2. Changes taste
3. Temperature changes
4. Changes color
5. Melts
6. Changes smell
7. Makes bubbles
8. Turns cloudy
9. Dissolves
10. Ripping
11. Breaks
12. Boils
Select all of the indicators that might tell you a physical change has occured.
("Check Answers" is at the bottom of the page)
1. Cutting
2. Changes taste
3. Temperature changes
4. Changes color
5. Melts
6. Changes smell
7. Makes bubbles
8. Turns cloudy
9. Dissolves
10. Ripping
11. Breaks
12. Boils