Show:
Atoms/Elements
Mass Conservation
Balancing Equations
Balancing Equations
Reaction Types
100
Electrons orbit around this part of an atom...
the nucleous. (protons/Neutrons)
100

What can mass not do?

Be created or destroyed

100
The molecules/chemicals that go into a chemical reaction are called...
reactants (because they react)
100
The molecules/chemicals that are produced from a chemical reaction are called...
Products
100

A + B --> AB

Synthesis 

200
What makes one atom different from another is the...
number of protons!
200

What is the mass of the products if you put in 50 grams of one material and 33 grams of another material?

83 grams.

200
When balancing the reactants and products of a chemical equation, you need to balance BOTH the...
Number and kinds of elements.
200
The most important thing to know about balancing chemical equations is that the number of atoms in the reactants...
Always equals the number of atoms in the products.
200

How many reactants does a decomposition reaction have?

1

300
The 3 parts of an atom and their charges are...
• Proton- Positive charge • Nuetron- NO charge • Electron- Negative charge
300

 If the mass of the reactants: NaCl is 191 grams and calcium hydroxide (Ca(OH)2) is 74 grams. Then the mass of the products produced are 80 grams of sodium hydroxide (2 NaOH). What mass of calcium chloride (CaCl2) is produced?

    NaCl   +   Ca(OH)2  🡪 CaCl2      +  2 NaOH



185 grams

300
Balance this equation... 2NaCl + F2 > NaF + Cl2
2NaCl + F2 > 2 NaF + Cl2
300
Balance this equation... N2 + 3H2 > NH3
N2 + 3H2 > 2NH3
300

What type of reaction?

SnCl2 + Zn -> ZnCl2 + Sn

Single Replacement

400
When 2 elements bond together they create a...
Molecule.
400

I begin a combustion reaction with 100 grams of material and end up with a product of 150 grams of material. Where did the extra mass come from?

Oxygen in the air.

400
Balance this equation... CH4 + O2 > CO2 + H2O
CH4 +2O2 > CO2 + 2H2O
400
Balance this equation... Reactants: 2KClO3 > KCl + O2
2KClO3 > 2KCl + 3O2
400

What type of reaction?

KCl + AgNO3 -> KNO3 + AgCl


Double Replacement

500
What is the atomic symbol for Gold
Au
500

If mass increases during a reaction is this endothermic or exothermic?

Exothermic

500
Balance this equation... HCl + CaCO3 > CaCl2 + H2O + CO2
2HCl + CaCO3 > CaCl2 + H2O + CO2
500
The field of science that deals with balancing chemical equations is called...
Stoichiometry.
500

What are the 2 product in a combustion reaction?

CO2 and H2O