Chemistry Module 2 Chapter 2

Question 1

Mass of an electron

Answer 1

1/1836

Question 2

How is the periodic table ordered

Answer 2

In order of proton number

Question 3

1 neutron isotope of hydrogen:

Answer 3

Deuterium (D)

Question 4

Relative isotopic mass:

Answer 4

The mass of an isotope relative to 1/12 the mass of an atom of carbon-12

Question 5

Relative atomic mass:

Answer 5

The weighted mean mass of an atom of an element relative to 1/12th the mass of an atom of carbon-12

Question 6

How do you find the percentage abundance of isotopes in a sample of an element

Answer 6

Use a mass spectrometer

Question 7

How does a mass spectrometer work

Answer 7

Ions in a vaporised and ionised sample are accelerated, heavier ions move more slowly and are more difficult to deflect than lighter ions so ions of each isotope are separated.

Question 8

Mass spectrometry

Answer 8

A process by which percentage abundance of isotopes of an element are found

Question 9

Define binary compound

Answer 9

A compound that contains two elements only

Question 10

Polyatomic ions

Answer 10

An ion containing more than one element bonded together