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Vocabulary
Chemical Reactions
Balancing Chemical Equations
Predicting Chemical Equations
Random
100
The substance(s) that are present at the start of a reaction.
What is a reactant?
100

This is an example of: Pb(NO3)2 + K2CrO4 ---> PbCrO +2KNO3

What is double replacement?

100

Balance this equation: H2 + O2 ---> H2O

2H2 + O2 ---> 2H2O

100
Predict and balance the decomposition of MgS ->
What is MgS -> Mg + S
100
Chemical equations must be balanced to satisfy the ___________.
What is the Law of Conservation of Mass/Energy?
200
A combustion reaction means that this element is a reactant
What is oxygen?
200

What is this an example of?: P4 + 5O2 ---> P4O10

What is synthesis?

200

Balance this: N2 + H2 --> NH3

N2 + 3H2 --> 2NH3

200

Predict and balance: Mg + O2 ->

What is 2Mg + O2 -> 2MgO

200
In every balanced equation, each side has the same number of ______(s).
What is atoms?
300
A product.
What are the substances produced from a chemical equation?
300

What is this an example of? 2H3PO4 ---> H4P2O7 + H2O

What is decomposition?

300

Balance: Al + H2SO4 --> Al2(SO4)3 + H2

2Al + 3H2SO4 --> Al2(SO4)3 + 3H2

300

Predict and balance the combustion reaction of CH4 + O2 ->

What is CH4 + 2O2 -> CO2 + 2H2O

300

The number of atoms in the following compound, Na2(SO4)3

What is 2 Na, 3 S, and 12 O?  (17 atoms total)

400
Precipitate
When a solid is formed and settles out of a liquid mixture, the solid is known as a _______.
400

What is this an example of? CH4 + 2 O2---> CO2 + 2 H2O

What is combustion?

400

Al + Fe2O3 --> Al2O3 + Fe

2Al + Fe2O3 --> Al2O3 + 2Fe

400

Predict and balance the single replacement: HCl + Ag ->

2HCl + 2Ag -> H2 + 2AgCl

400

The chemical formula for aluminum oxide

Al2O3

500

The number of  molecules are in 1.0 mole of CO2?

What is 6.02 x 10^23 molecules of CO2

500
What is the product of every combustion reaction that contains C, H, and O?
What is carbon dioxide and water?
500

Balance: C4H8 + O2 --> H2O +CO2

C4H8 + 6O2 --> 4H2O + 4CO2

500
Predict and balance the double replacement reaction KI + Pb(NO3)2-->
2KI + Pb(NO3)2 -> 2K(NO3) + PbI2
500
The four pieces of evidence that a chemical reaction has occurred?
What are: precipitate, gas, color change, heat?