7.1: Describing Reactions
7.2: Types of Reactions
7.3: Energy Changes in reactions
7.4: Reaction Rates
7.5: Balancing
100
Substances that undergo a change
What is reactants
100
List the 5 main types of reactions
What are synthesis, decomposition, single-replacement, double-replacement, and combustion
100

Formation of chemical bonds _________ energy

What is releases

100
The rate at which reactants change in to products over time
What is reaction rate
100

A chemical equation that has an equal number of all atoms on both sides

What is balanced

200
A representation of a chemical reaction in which reactants and products are expressed as formulas
What is a chemical equation
200

2H2O-> 2H2 + O2

What is decomposition

200
Releases energy to its surroundings
What is exothermic
200
Increasing the temperature _________ reaction rate
What is increases
200

How many Hydrogen atoms are in the following compound? 2(H2O)

What is 4

300
States that mass is neither created nor destroyed in a chemical reaction
What is the law of conservation of mass
300

AB + CD -> AD + CB

What is double-replacement

300

2HgO + heat -> 2Hg + O2, Endothermic or exothermic?

What is endothermic

300
Decreasing the concentration _______ reaction rate
What is decreases
300

The number that you CANNOT change while balancing equations.

What is subscript

400
The numbers that appear before the formulas in a chemical equation
What are coefficients
400

Creates light and heat

What is combustion

400

Breaking bonds requires ____________

What is energy

400
A substance that affects the reaction rate without being used up in the reaction
What is a catalyst
400

The process you use to balance equations.

What is a trial and error

500
New substances formed as a result of a change
What are products
500
A + B -> AB
What is synthesis
500

Absorbs energy from its surroundings

What is endothermic

500

An _____________ slows a reaction down.

What is lowers

500

The day after yesterday

What is today

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