Science 1
Science 2
Science 3
Science 4
Science 5
100
What is the word that means the amount of one material in a certain volume of another material?
concentration
100
What words means a reaction that absorbs energy in the form of heat?
Endothermic Reaction
100
What word means a reaction that releases energy in the form of heat?
Exothermic Reaction
100
What word means the minimum amount of energy needed to get a chemical reaction started?
Activation Energy
100
What word means a material that decreases the rate of a reaction?
Inhibitor
200
What word means a biological catalyst that lowers the activation energy of reactions in cells?
Enzymes
200
What word means a material that increases the rate of a chemical reaction by lowering the activation energy?
Catalyst
200
Every physical reaction involves a change in something. What is changing?
Energy
200
What happens to an enzyme at the end of a reaction?
Nothing, it remains unchanged.
200
Who added inhibitors like wood pulp to nitroglycerin in order to slow the volatile reaction of this explosive?
Alfred Nobel
300
A cold pack used on a muscle injury is an example of what type of reaction?
endothermic reaction
300
An inhibitor is used to do what to the rate of a chemical reaction that is occurring?
decrease
300
Making ice cubes is an example of what type of reaction?
Exothermic Reaction
300
By lowering the activation energy, what increases their rate of reaction?
catalysts
300
By increasing activation energy, what decreases rate of reaction?
Inhibators
400
What are two factors that affect the rate of a chemical reaction?
**see sheet and mark off two of the four**
400
What are two factors that affect the rate of a chemical reaction? ** If other question was asked, give the two that were not provided**
** see sheet for the four answers**
400
Why when you increase the concentration does the rate of the reaction increase?
Because increasing concentration makes more particles available to react.
400
What is Activation Energy?
The minimum amount of energy needed to get a chemical reaction started.
400
Interpret the diagram on the board and fill in the necessary vocabulary in the blanks provided.
Reactants and Products
500
What is a catalyst?
A material that increases the rate of a chemical reaction by lowering the activation energy.
500
What is an inhibitor?
A material that decreases the rate of a reaction.
500
What is an enzyme?
A biological catalyst that lowers the activation energy of reactions in cells.
500
What does concentration mean?
The amount of one material in a certain volume of another material
500
What type of reaction is on the board? How do you know?
Endothermic- the energy of the products is greater than the energy of the reactants.
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