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chemistry > atoms,ions and compounds > Flashcards

atoms,ions and compounds Flashcards

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1
Q

what is a binary compound

A

comprise of two elements eg sodium oxide.

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2
Q

what is a polyatomic ion

A

more complex ions consist of atoms of more than one element bonded together.

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3
Q

formulae for ammonium

A

NH +
4

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4
Q

hydroxide

A

OH-

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5
Q

nitrate formulae

A

NO -
3

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6
Q

carbonate formulae

A

CO 2-
3

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7
Q

phosphate formulae

A

PO 3-
4

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8
Q

sulphate formulae

A

SO 2-
4

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9
Q

nitrite formulae

A

NO -
2

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10
Q

sulphite formulae

A

SO 2-
3

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11
Q

hydrogencarbonate formulae

A

HCO -
3

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12
Q

dichromate formuale

A

Cr O 2-
3 7

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13
Q

manganate (VII) (permangnate)

A

MnO4 -

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14
Q

zinc formulae

A

Zn2+

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15
Q

silver

A

Ag+

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16
Q

what is relative isotopic mass

A

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

17
Q

what is relative atomic mass

A

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

18
Q

What can a mass spectrometer be used for?

A

Determine the accurate relative atomic mass of an element and also find the abundance of or mass of isotopes present in a sample

19
Q

what are the stages of a mass spectrometer

A

ionisation , acceleration , ion drift , detection

20
Q

what is the electron gun ionisation used for?

A

elements and low Mr compounds

21
Q

what is electrospray ionisation used for?

A

used for high MR compounds eg proteins

22
Q

which ions reach the detector first and why ?

A

the lighter ions reach the detector first because they travel faster than heavier ones as they are lighter. they have the same kinetic energy.

23
Q

nitrate

A

NO3-

24
Q
A

chemistry (23 decks)

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