Unit 3- Chemical Reactions- Mr. Fitz

Types of Reactions

100

This type of reaction is where two smaller compounds combine to make a new compound.

What is synthesis

200

This is a reaction where one element is replaced with another.

What is single replacement.

300

This is the name for a compound made from two or more atoms.

What is a molecule

400

This reaction is where a larger compound is broken down into smaller compounds.

What is a decomposition

500

What type of reaction is this?

CaCl₂ + Na₂S ---> CaS + 2NaCl

What is double replacement

Chemicals Don't Reason they React

100

In chemical reactions the -> symbol stands for this.

What is yields?

200

When heat is produced, light is emitted, or a precipitate is formed this is an indication of this

What is a chemical reaction/change?

300

In the chemical reaction

Mg + O -> MgO

the compound MgO is located on this side of the equation.

What is the product side?

400

Why did Mr. Fitz clean the pennies before our lab on Friday?

The dirt on the penny may have interfered with the reaction.

500

If you are combining Na and Cl to make NaCl, how would you write that equation.

Na + Cl --> NaCl

Balancing Act

100

When the number of atoms are equal on both sides of the equation, this law has been fulfilled.

What is the Law of Conservation of Mass

200

These are used to help balance chemical equations.

What are coefficients?

300

Balance the following chemical equation. You must show all work and simplify your answer. 

Fe + O₂ --> Fe₂O₃

4 Fe + 3O₂ --> 2Fe₂O₃

400

Balance the following equation. You must show all work and simplify your answer! 

Li + Br₂ --> LiBr

2Li + Br₂ --> 2LiBr

500

Balance the following equation. You must show all work and simplify your answer! 

H₂O --> H₂ + O₂

2H₂O --> 2H₂ + O₂

Conservation of Matter

100

If there is one product in your equation, then you have this type of reaction.

What is a synthesis reaction?

200

12g of Mg + 5g of O ---> ? g MgO

What is 17g

300

50g NaHCO₃ + 100g CH₃COOH → 30g CH₃COONa + 20g H₂O + ? g CO₂

What is 100g CO₂

400

What is meant by a closed system?

An experiment where nothing can escape (particularly gas)

500

In the law of conservation of mass, what two things in an equation must be the same?

The mass of the reactants and the products.

Miscellaneous

100

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

What is balanced

200

Which of the following equations is balanced?

A) Na₂S + 2KCL --> 2NaCl +K₂S

or

B) LiCl +2H₂O --> 2HCl + Li₂O

A!

300

CsF is an example of this

What is a compound?

400

This reaction could be classified in this way 

2Na + 2H₂O --> 2NaOH + H₂

What is a single replacement reaction?

500

Balance the following equation. Be sure to show all work and simplify your answer. 

CuS + KCl --> CuCl₂ + K₂S

CuS + 2KCl --> CuCl₂ + K₂S