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AS Level Chemistry > Atoms > Flashcards

Atoms Flashcards

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1
Q

What is an Element?

A

An Element is a Substance consisting of Atoms, which have the Same Number of Protons

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2
Q

What is the mass of an Electron?

A

The Mass of an Electron is 1/1840

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3
Q

Define the term Isotope

A

An Isotope is a Variation of the Atom of an Element with a different number of Neutrons, hence a different Atomic Mass

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4
Q

What do all Isotopes have in common?

A

Atomic/Proton Number

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5
Q

What is the difference between different Isotopes?

A
  • Number of Neutrons
  • Isotopic Atomic Mass
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6
Q

Define Relative Atomic Mass

A

Relative Atomic Mass is the weighted Mean Mass of all Atoms of an Element in comparison to One Twelfth of the mass of a Carbon-12 Atom

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7
Q

What does Relative Isotopic Mass mean?

A

Relative Isotopic Mass is the weighted Mass of an Atom in comparison to One Twelfth of the mass of a Carbon-12 Atom

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8
Q

Define Relative Molecular Mass

A

Relative Molecular Mass is the weighted Mean Mass of a Molecule in comparison to One Twelfth of the mass of a Carbon-12 Atom

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9
Q

What does Relative Formula Mass mean?

A

Relative Formula Mass is the weighted Mean Mass of a Formula Unit in comparison to One Twelfth of a Carbon-12 atom

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10
Q

What can be used to find Relative Masses?

A

A Mass Spectrometer can be used to work out Relative Masses

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11
Q

What is an Ion?

A

An Ion is a Positively or Negatively charged Atom

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12
Q

What Ion do Zinc atoms form?

A

Zinc forms Zn2+ Ions

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13
Q

What Ion do Silver Atoms form?

A

Silver atoms form Ag+ Ions

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14
Q

What does Iron(III) mean?

A

Iron(III) means Iron is in the the form Fe3+

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15
Q

What is a Molecular Ion?

A

A Molecular Ion is an Ion made from Covalently Bonded Atoms

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16
Q

What Is the Formula of Ammonium?

A

Ammonium: NH4+

17
Q

What is the Formula of a Hydroxide Ion?

A

Hydroxide: OH-

18
Q

What is the Formula of a Nitrate Ion?

A

Nitrate: NO3-

19
Q

What is the Formula of a Nitrite Ion?

A

Nitrite: NO2-

20
Q

What is the Formula of a Hydrogencarbonate ion?

A

Hydrogencarbonate: HCO3-

21
Q

What is the Formula of a Carbonate Ion?

A

Carbonate: CO32-

22
Q

What is the Formula of a Sulphate Ion?

A

Sulphate: SO42-

23
Q

What is the Formula of a Dichromate Ion?

A

Dichromate: Cr2O72-

24
Q

What is the Formula of a Sulfite Ion?

A

Sulfite: SO32-

25
Q

What is the Formula of a Phosphate Ion?

A

Phosphate: PO43-

AS Level Chemistry (7 decks)

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