Isotopes

Question 1

How do you calculate Relative Atomic Mass?

Answer 1

(Relative Mass X Abundance)+other masses X Abundance)/100

Question 2

What is an isotope?

Answer 2

An element with the same number of protons but a different number of neutrons.

Question 3

What is the relative atomic mass?

Answer 3

The weighted mean mass of an atom compared to 1/12th of carbon-12

Question 4

What is relative isotopic mass?

Answer 4

The mass of an atom of an isotope compared with 1/12th of the mass of an atom of carbon-12.

Question 5

How does Mass spectrometry work?

Answer 5

Sample is first vaporised and turn into a gas.
Electrons bombard the gas and knock off electrons making the gas have a +1 ion.
Ions are only allowed to accelerate in the next stage.
Magnetic field deflects lightest ions most. Heavier ions are slightly less deflected.
The detector detects the ions at varied areas and can then create a chart.

Question 6

What is an ion?

Answer 6

An electrostatic attraction between two oppositely charged ions.

Question 7

What is the charge of C03?

Answer 7

2-

Question 8

What is the charge SO4?

Answer 8

2-

Question 9

What is the charge of OH?

Answer 9

-

Question 10

What is the charge of NH4?

Answer 10

+

Question 11

What is the charge Ag?

Answer 11

+

Question 12

What is the charge of NO3

Answer 12

-

Question 13

What is the charge of Zn?

Answer 13

2+

Question 14

What is M/Z?

Answer 14

Mass/ Charge