Chemistry Exam Review

Question 1

Label the Rx type

1. A-> B+C
2. B+C-> A
3. A+BC-> B+AC
4. AB+CD-> AD+CB
5. Fuel+O2->CO2+H2O

Answer 1

1. Decomposition
2. Synthesis
3. Single Displacement
4. Double Displacement
5. Combustion

Question 2

Balance the Rx

C3+5O2->3CO2+4H20

Answer 2

Do on paper

Question 3

Show Ionic Bonding for Ca and F

Answer 3

Do on paper

Question 4

Show covalent bonding for H and O

Answer 4

Do on paper

Question 5

What does it mean in an Ionic Compound if the ending is “ide”

Answer 5

The numbers are the same to the original equation

Question 6

What does it mean in an ionic compound if the ending is “ite”

Answer 6

There is one less then the original equation

Question 7

What does it mean in an ionic compound when you have an “ate” ending

Answer 7

You have one more then the original equation

Question 8

What are the diatomic elements

Answer 8

Hydrogen 
Nitrogen 
Fluorine 
Oxygen 
Iodine 
Chlorine 
Bromine

Question 9

What is a physical change

Answer 9

It alters the form of a substance, it has a boiling point, it is soluble, and the size has changed

Question 10

What is a chemical change

Answer 10

It forms a new substance, there is gas formation, precipitated formation, light/heat is given off, new colour

Question 11

In a Bohr Rutherford Digram how do you find the protons, electrons, and neutrons

Answer 11

Protons= atomic number
Electrons=atomic number
Neutrons=atomic mass-atomic number

Question 12

In Lewis Dot Diagrams how do you know how many dots to put around the element

Answer 12

It is the valance shell (group #)

Question 13

What type of elements are in ionic compound

Answer 13

Metal and non-metal

Question 14

What type of elements are in a molecular compound

Answer 14

Non-metal