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Vocabulary that Matters
Chemical Equations and Reactions
Balancing Act
Who Dat?
Miscellaneous
100

When one or more substances are changed into new substances this is called a _________ __________.

 chemical reaction

100
In chemical reactions the -> symbol stands for this.
What is yields?
100

When balancing equations never change the __________.

Subscript

100
If there is one product in your equation, then you have this type of reaction.
What is a synthesis reaction?
100

What is the number written below a chemical symbol called?

subscript

200
When the number of atoms is equal on each side we say that the equation is this.
What is balanced?
200

Give 2 indicators that show a chemical reaction has taken place. (Remember the web quest)

Heat, light, color change, ppt, bubbles, odor, gas, etc

200
These are used to help balance chemical equations.
What are coefficients?
200
This chemical reaction has the generic formula of: AB --> A + B
What is a decomposition reaction?
200

AB  -->  A   +   B is the general formula for a ________ reaction.

Decomposition

300

The substances you start with in a chemical reaction are called the ___________.

Reactants

300

In the chemical reaction, Mg + O -> MgO, the compound MgO represents the _________.

 product 

300
Balance the following chemical equation. You must show all work and simplify your answer. Fe + O2 --> Fe2O3
4 Fe + 3O2 --> 2Fe2O3
300

A combustion reaction always produces what two substances?

 carbon dioxide and water

300

The term ____________ means that heat is released.

Exothermic

400

The substances that are made in a chemical reaction are called the ___________.

Products

400

Elements form compounds in order to get this many valence electrons .

8

400
Balance the following equation. You must show all work and simplify your answer! Li + Br2 --> LiBr
2Li + Br2 --> 2LiBr
400

When atoms from 2 compounds switch places, this type of reaction occurs.  AB  +  CD  -->  CB   +  AD

What is a double displacement reaction?

400

What type of reaction is this :

 2Na + 2H2O --> 2NaOH + H2

 single replacement reaction

500

A combination of symbols and numbers written out that show the chemical reaction is called a chemical ________.

Equation

500

We must balance chemical equations in order to satisfy the Law of Conservation of _________.

Mass

500
Balance the following equation. You must show all work and simplify your answer! C6H6 + O2 --> CO2 + H2O
2C6H6 + 15O2 --> 12CO2 + 6H2O
500

When atoms in a replacement reaction switch places the + charged atom (metal) will always switch with the other ________.

+ charged atom (metal)

500

Give 2 things that effect the rate of a chemical reaction. (Remember the web quest)

Heating, concentration of reactants, reactants state (surface area), catalyst, etc.