Changes
Equations
Reactions
Rates
Periodic Table
100
Ripping a piece of paper is an example of this change
What is a Physical Change?
100
Name for the chemical formula NaCl?
What is Sodium Chloride?
100
Substances to the right of the arrow in an equation are called these
What are Products?
100
The minimum amount of energy needed to start a chemical reaction
What is Activation Energy?
100
Element with atomic number 6
What is Carbon?
200
A bike chain rusting from rain is an example of this change
What is a Chemical Change?
200
The number placed in front of a chemical formula
What is Coefficient?
200
When two or more elements combine to make a more complex substance
What is Synthesis?
200
Breaking a substance into smaller pieces increases this
What is Surface Area?
200
The lightest element
What is Hydrogen?
300
This type of chemical change releases energy
What is Exothermic Reaction?
300
This states that during a chemical reaction, matter is not created nor destroyed
What is Conservation of Mass?
300
The substances that go into a chemical reaction
What are Reactants?
300
This added to a reaction lowers the activation energy needed
What is Catalyst?
300
Element with chemical symbol Fe
What is Iron?
400
In an endothermic reaction, the products have _________ energy compared to the reactants
What is More?
400
The arrow in a chemical reaction reads as this word
What is Yields?
400
2H2O --> 2H2O + O2 is an exmaple of this type of chemical reaction
What is Decomposition?
400
The amount of substance in a given volume
What is Concentration?
400
Another name for group 1 elements
What is Alkali Metals
500
A solid that forms from a liquid during a chemical change
What is Precipitate?
500
In this, matter can enter from or escape its surroundings
What is an Open System?
500
When one element replaces another element in a compound
What is Replacement?
500
These in the human body help reactions occur at body temperature
What are Enzymes?
500
Name of most reactive group of nonmetals
What are Halogens?
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