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A 100

The substances that undergo change in a

chemical reaction are called

reactants

A 100

Hydrochloric acit, HCl, is added to solid NaOh. After the reaction is

finished NaCl idssolved in water remains. What are

the products?A 200

NaCl and H2O

A 200

Which of the following does NOT state what the

arrow means in a chemical equation?

forms, produces, or conserves

A 300

conserves

A 300

True or False

There is only one reactant in a synthesis reaction.

A 400

false

A 400

In a compound, chemical energy is contained in the

______.

A 500

bonds

A 500

True or False

Bonds of the reactants in a chemical reaction are

broken, and bonds of the products are formed.

B 100

True

B 100

The total amount of energy before and after a chemical reaction is the same. Thus,

energy is ____.

B 200

conserved

B 200

In general, if the temperature of a chemical reaction is increased, the

reactio rate ___.

B 300

increases

B 300

A log is burning in a fireplace. If the amount of oxygen reaching the log is

decreased, what is true about the reaction rate?

B 400

it decreases

B 400

Reaction rates do NOT tell you how fast

B 500

B 500

substances are changing states

In a chemical reaction, the total mass of the reactants equals the total mass of the

products. This is the Law of _______.

C 100

conservation of mass

C 100

A ____ is the number that appears before a formula in a

chemical equation.

C 200

coefficient

C 200

The element _____ is always present in a

combustion reaction.

C 300

oxygen

C 300

DAILY DOUBLE

C 400

DAILY DOUBLEPlace A Wager

In a double replacement reaction, there are two

reactants and two ______.

C 400

products

C 400

During a chemical reaction, energy is released

during the ______ of chemical bonds.

C 500

formation

C 500

Cooking requires continuous addition of energy to the

chemical reactions that are taking place. The chemical

reactions involved in cooking can be described as _____

D 100

endothermic

D 100

Measuring how quickly a reactant disappears is one

way to measure the ____ of the reaction.

D 200

rate

D 200

If something that reacts with an acid is crushed

before being placed in the acid, the reaction rate

would ______.

D 300

increase

D 300

The statement that when a change is introduced to a system in equilibrium, the equilibrium

shifts in the direction that relieves the stress on the system

is known as ________

D 400

La Chatelier’s Principle

D 400

What is the purpose of balancing a chemical

equation?

D 500

it shows the mass is conserved

D 500

What kind of reaction releases heat into the

environment?

E 100

exothermic

E 100

What kind of reaction takes in heat?

E 200

endothermic

E 200

Name 3 kinds of reactions.

E 300

single-replacement

double-replacement

combustion

synthesis

decomposition

E 300

What are coefficients?

E 400

The larger numbers in front of compounds.

E 400

What are subscripts?

E 500

The smaller, lower numbers after an element.

E 500

When balancing an equation, which numbers

can you NOT change?

F 100

subscripts

F 100

Balance this equation:

Mg + O2 = MgO

F 200

2Mg + O2 = 2MgO

F 200

What happens when chemical bonds are

broken?

F 300

energy is released

F 300

In a decomposition reaction, what is being broken down?

F 400

a compound

F 400

What does it mean when someone calls an equation

“balanced”?

F 500

It means there is the same number of elements on both

sides of the equation.

F 500

The Final Jeopardy Category is:

Balancing Equations

Place your wager.

Click on screen to begin

Balance this equation:

Na + Br2 = NaBr

Click on screen to continue

2Na + Br2 = 2NaBr

Click on screen to continue

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