Shared Flashcard Set

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Chemical Reactions
Study Guide
27
Chemistry
8th Grade
01/28/2014

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Cards

Term
What is a change in matter that produces one or more new substances?
Definition
Chemical Reaction
Term
What is anything that has mass and takes up space?
Definition
Matter
Term
What is the study of matter and how it changes?
Definition
Chemistry
Term
What is a characteristic of a substance that can combine to form a complex substance?
Definition
Physical Change
Term
What is the number in front of the chemical formula?
Definition
Coefficient
Term
What is a solid that forms from a solution during a chemical reaction?
Definition
Precipitate
Term
What is the type of reaction in which energy is absorbed?
Definition
Endothermic Reaction
Term
What type of reaction releases energy?
Definition
Exothermic Reation
Term
The substances you have at the beginning or new materials added during the chemical reaction?
Definition
Reactants
Term
When a reaction is complete, what are the substances called?
Definition
products
Term
True or False

You could use water to put out a small fire
Definition
True
Term
True or False

You could use salt to put out a small fire
Definition
True
Term
True or False

You could use baking soda to put out a small fire
Definition
True
Term
True or False

You could use oxygen to put out a small fire
Definition
False
Term
What states that chemical equations must be balanced?
Definition
Conservation of mass
Term
What do inhibitors prevent?
Definition
Synthesis reaction
Term
Is meat spoiling a chemical change or physical change
Definition
Chemical
Term
Is water freezing a chemical or physical change?
Definition
Physical
Term
Is mercury rising a chemical change or physical change?
Definition
Physical
Term
Is butter softening a chemical change or a physical change?
Definition
Physical
Term
What do you call the energy required to start a chemical reaction?
Definition
Activation energy
Term
What material slows down the rate of a chemical reaction?
Definition
Enzyme
Term
What is a biological catalyst that can be found in the cells of your body?
Definition
Enzyme
Term
What is coal an example of?
Definition
Fuel
Term
What is the reaction between oxygen and fuel?
Definition
Combustion
Term
When matter IS allowed to enter and leave, it is called what kind of system?
Definition
Open System
Term
When matter is NOT allowed to enter and leave, it is called what kind of system?
Definition
Closed System
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