Miscellaneous
Changes in Matter
Writing Chemical Equations
Balancing Chemical Equations
Controlling Chemical Reactions
100
This is a measure of how fast a reaction proceeds.
What is RATE OF REACTION?
100
Adding this tends to slow down a chemical reaction.
What is an Inhibitor?
100
A one or two letter set of characters that is used to identify elements.
What is SYMBOL
100
The materials you have at the beginning of a chemical reaction.
What is REACTANTS
100
A reaction that releases energy in the form of heat.
What is exothermic reaction.
200
Burning of paper is an example of this.
What is an Chemical Change?
200
The melting of ice is an example of this.
What is Physical CHANGE
200
A combination of symbols that represent the elements in a compound and tells how many atoms there are of a specific element.
What is CHEMICAL FORMULA
200
The materials you have at the completion of a reaction.
What is PRODUCTS.
200
A reaction that absorbs energy in the form of heat.
What is an ENDOTHERMIC REACTION.
300
In an endothermic reaction this is absorbed.
What is a Energy?
300
chemical reactions usually speed up at these temperatures.
What is HIGHER?
300
Shows the number of atoms of an element in a molecule.
What is a SUBSCRIPT
300
The arrow in a chemical equation is read as this.
What is PRODUCES
300
The minimum amount of energy that has to be added to start a reaction.
What is ACTIVATION ENERGY.
400
The size of the reactant particles can affect this.
What is rate of reaction?
400
A PROCES IN WHICH ENW SUBSTANCES ARE FORMED.
What is CHEMICAL REACTION?
400
Shows the number of compounds in a chemical equation written in front of the element.
What is a COEFFICIENT.
400
The following equation has this many elements and this many total atoms. H ₂C₂ H₃ 0₂
What is 4 elements? What is 9 atoms?
400
The amount of one material in a given volume of another material.
What is CONCENTRATION.
500
To check that an equation is balanced, you count the number of these on each side of the equation.
What are each type of atoms?
500
Give two types of evidence for chemical reactions.
What is COLOR CHANGE, PRECIPITATE, GAS PRODUCTION, CHANGES IN TEMPERATURE, CHANGES IN PROPERTIES.
500
The principle that states during a chemical reaction, matter cannot be created or destroyed.
What is THE LAW OF CONSERVATION OF MASS.
500
Balance the following equation: 2H₂ + 0₂ → H₂0
What is coefficient 2?
500
A material that increases the rate of a reaction by lowering the activation energy.
What is a CATALYST.
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