Periodic Table

Question 0

What is the oxidation state for oxygen and what is the exception?

Answer 0

-2 except with peroxides its -1

Question 1

What does the period, block and group number mean for sub shell notation?

Answer 1

Period - highest number shell
Block - highest energy shell
Group - no. of electrons in highest number shell

Question 2

What is the oxidation number of hydrogen?

Answer 2

With metals -1

With non metals +1

Question 3

What is the oxidation number of an element?

Answer 3

0

Question 4

What is the product of an acidic oxide with a base?

Answer 4

Water and metal oxide

Question 5

What are acidic oxides?

Answer 5

Non metals

Question 6

What are basic oxides?

Answer 6

Metals

Question 7

What is formed when an acidic oxide mixes with water?

Answer 7

An acid

Question 8

What is the product of a basic oxide with an acid?

Answer 8

Water and metal ions

Question 9

What is the product of basic oxides with water?

Answer 9

Hydroxide ions and metal ions

Question 10

What are the two amphoteric oxides?

Answer 10

ZnO and Al2O3

Question 11

What is the product when an amphoteric oxide is mixed with a base?

Answer 11

Water and metal oxide

Question 12

What is the product when amphoteric oxide mixes with an acid?

Answer 12

Water and metal ion

Question 13

A molecule is non polar if?

Answer 13

Symmetrical
Even distribution of charge
Polarities cancel out

Question 14

A molecule is polar if?

Answer 14

Lacks symmetry
Difference in electronegativity
Uneven distribution of charge
Polarities don’t cancel

Question 15

What substance has higher mpt. (P or NP?)

Answer 15

Polar

Question 16

What are H-bonds?

Answer 16

Electrostatic forces of attraction
Highly electropositive H bonded to NOF in one molecule
Highly electronegative NOF in neighbouring molecule

Question 17

Explaining shape of molecules

Answer 17

How many regions
If they are bonded or unbonded
All repel each other