Show:
Changes
Reactions
Controlling Chem. Reactions
Misc.
Elements
100
Ripping a piece of paper is this type of change
What is Physical?
100

The number in front of a element or compound in an equation

What is a Coefficient?

100
The minimum amount of energy needed to start a reaction
What is Activation Energy?
100
Any change that alters the appearance of a substance but does not change it into another substance
What is a Physical Change?
100
The element with the lowest atomic mass
What is Hydrogen?
200
A change in matter that produces new substances
What is a Chemical Change?
200
Law that states matter cannot be created nor destroyed in a chemical reaction
What is Law of Conservation of Mass?
200
The amount of substance in a given volume
What is Concentration?
200

Uses chemical symbols instead of words to show a chemical reaction

What is a Chemical Equation?

200
The Element with atomic number 8
What is Oxygen?
300
Substances that undergo the chemical change
What is Reactants?
300
In this type of system no matter can enter or escape
What is a Closed System?
300
Type of reaction where the products have more energy that then reactants
What is Endothermic?
300
The three ways to tell that a chemical reaction occured
What is Color Change, Formation of a Gas, and Formation of a Precipitate
300
Element with the chemical symbol K
What is potassium?
400
A solid that forms from a liquid during a chemical reaction
What is a Precipitate?
400
This type of reaction occurs when compounds break down into simpler substances.
What is Decomposition?
400
These decrease the rate of a chemical reaction
What is an Inhibitor?
400
Reaction when one element replaces another element in a compound
What is Replacement?
400
Fluorine is in this group of element
What is Halogens or group 17?
500
Mixing baking soda and vinegar had a change in energy and was this type of reaction
What is Endothermic?
500
When oxygen (O2) reacts with hydrogen (H2), how many molecules of water do you get from the balanced equation?
What is Two?
500
A catalyst and inhibitor affect the rate of a chemical reaction, these are the other three ways
What are Surface Area, Temperature, and Concentration?
500
Grains of sugar dissolve faster than sugar cubes because the grains have more this
What is Surface Area?
500
The two elements that are liquid at room temperature
What are Mercury and Bromine?