Unit 2 - Chemistry

Question 1

What is the Atomic # of Aluminum?

Answer 1

13

Question 2

How many electrons, protons, and neutrons does Aluminum have?

Answer 2

Protons - 13
Electrons - 13
Neutrons - 14

Question 3

Is Aluminum metal or non-metal? Why?

Answer 3

It is a metal because its on the left side of the staircase in the Periodic Table.

Question 4

What type of bond would Aluminum bond with Oxygen?

Answer 4

They would form an ionic bond.

Question 5

What are the 2 main types of bonds?

Answer 5

1. Ionic - metal vs non-metal

2. Covalent - non-metal vs non-metal

Question 6

What are the rules for naming ionic compounds?

Answer 6

they end in “…ide”

Question 7

What are the rules for naming polyatomic compounds?

Answer 7

they end in “…ate” or “…ite” and the names stay the same.

Question 8

What are the rules for naming molecular compounds?

Answer 8

they end in “…ide” and add prefixes.

Question 9

What are some clues to determine a chemical reaction?

Answer 9

1. Colour Change
2. Gas/Bubbles
3. Heat &/or Light is absorbed or created
4. Precipitate
5. New Odour

Question 10

What are Molecular Compounds?

Answer 10

They are formed by two non-metals sharing electrons, this forms a covalent bond.

Question 11

What are the prefixes from 1-10?

Answer 11

1 - mono
2 - di
3 - tri
4 - tetra
5 - penta 
6 - hexa 
7 - hepta
8 - octa
9 - nona
10 - deca

Question 12

What is the difference between Acids & Bases?

Answer 12

Acids - pH of 0-7
          - large amount of H+ ions 
          - sour 
Bases - pH of 7-14
           - large amounts of OH- ions

Question 13

What is the pH scale?

Answer 13

it is used to determine the acidity of basicity of a substance.
(0-3)strong acid, (3-7) weak acid, (7) neutral, (7-10) weak base, (10-14) strong base.