Module 2, atoms, isotopes, etc

Question 1

Relative atomic mass

Answer 1

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

Question 2

Relative isotomic mass

Answer 2

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

Question 3

mass spectrometer ionization zone?

Answer 3

Sample atoms bombarded with high energy electrons which knock an electron off their outer shell leaving pos. ions

Question 4

Acceleration area

Answer 4

All atoms are accelerated to the same Ek

Question 5

State of saturated lipids?

Answer 5

Solid

Question 6

states of unsaturated fats?

Answer 6

liquid

Question 7

mass spectrometer drift region?

Answer 7

Larger isotopes are separated from the smaller as they take different times to move up the drift zone.

Question 8

ion detector, mass spectrometer?

Answer 8

Detects the pos. ions using the time that they reach it to separate the different ions and calculate the % abundance and relative isotomic mass

Question 9

What is the required condition of the mass spectrometer?

Answer 9

Vacuum, so no air present for particles to collide with and be slowed down or diverted

Question 10

D block elements with 1 type of ion?

Answer 10

Silver(Au+), Zinc(Zn2+), Scandium(Sc3+)

Question 11

Polyatomic ions?

Answer 11

Groups of atoms covalent bonded which have then lost or gained electrons to become ions

Question 12

Polyatomic ions?

Answer 12

Groups of atoms covalent bonded which have then lost or gained electrons to become ions

Question 13

Nitrate V

Answer 13

NO3^-

Question 14

Nitrate III

Answer 14

(nitrite) NO2^-

Question 15

Cyanide

Answer 15

CN^-

Question 16

Hydrogencarbonate

Answer 16

HCO3^-

Question 17

Hudrogensulfate

Answer 17

HSO4^-

Question 18

manganate (VII)

Answer 18

(permanganate) MnO4^-

Question 19

Amonium

Answer 19

NH4^+

Question 20

carbonate

Answer 20

CO3^2-

Question 21

Sulfate (VI)

Answer 21

(sulfate) SO4^2-

Question 22

Sulfate(IV)

Answer 22

sulfite SO3^2-

Question 23

dichromate (VI)

Answer 23

Cr2O7^2-

Question 24

dichromate (VI)

Answer 24

Cr2O7^2-

Question 25

Thiosulfate

Answer 25

S2O3^2-

Question 26

Thiosulfate

Answer 26

S2O3^2-

Question 27

Thiosulfate

Answer 27

S2O3^2-

Question 28

phosphate

Answer 28

PO4^3-

Question 29

Giant covalent structures

Answer 29

Boron, silicon, carbon

Question 30

compound made of 2belements?

Answer 30

binary compounds

Question 31

empirical formula?

Answer 31

The simplest whole number ratio of atoms of each element in a compound (giant structures)

Question 32

molecular formula?

Answer 32

actual number of atoms of each element in a compound (simple molecules)

Question 33

Ar is the same as?

Answer 33

molar mass(atoms), relative molecular formula (Mr, molecules) and relative formula mass (ionic compounds)

Question 34

hydrogen sulfide

Answer 34

H2S

Question 35

phosphorus?

Answer 35

P4

Question 36

reduce %age uncertainty?

Answer 36

Use a greater mass of a substance, use higher resolution apparatus