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Chemistry > Intro to Chem > Flashcards

Intro to Chem Flashcards

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1
Q

label the following as atom, element, molecule or compound:
- N

A

atom & element

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2
Q

label the following as atom, element, molecule or compound:
- N^2

A

molecule & element

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3
Q

label the following as atom, element, molecule or compound:
- N2O

A
  • molecule & compound
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4
Q

what is the energy between like charged particles

A

repel

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5
Q

what is the energy between opposite charged particles

A

attract

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6
Q

what is Coulomb’s law

A

notes

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7
Q

what is a the role of a catalyst

A

speeds up reaction and doesn’t get reconsumed

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8
Q

what endothermic

A

absorbs energy from surroundings

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9
Q

what is Avogadro’s number

A

6.022 * 10^23 = 1 mol = mass in g

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10
Q

what is one atomic mass unit relative to Carbon

A

C/12

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11
Q

what charges identify an element

A

protons

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12
Q

what is nuclear force

A

where similar charged atoms stick together over small distances rather than repelling each other e.g. beryllium

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13
Q

what are valence electrons

A

those on the outer shell

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14
Q

what group doesn’t lose electrons easily

A

metals (excluding H)

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15
Q

what is an ion

A

a charged atom

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16
Q

what is a cation

A

+ve ion

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17
Q

what is an anion

A

-ve ion

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18
Q

how do ionic bonds form

A

electrons trying to lower potential energy

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19
Q

are ionic bonds shared

A

no, electrons are taken from the metal by the non metal because the metal wants to go to lower energy

20
Q

how do we see electronegativity on the periodic table

A

incr. from left to right

21
Q

what is ionisation energy

A

amount of energy to remove an electron

22
Q

what is electronegative energy

A

energy for an electron to bond

23
Q

what is the formula for mass in terms of moles

A

m = nM
where m = mass, n = number of mole, M = molar mass

24
Q

what is the formula for moles in terms of volume

A

n = cV
where V = volume, c = concentration

25
Q

what is the gas law

A

PV = nRT

26
Q

what is the density formula

A

ro (p) = m/V
where m = mass, V = volume, p = density

27
Q

what is the formula for pressure

A

P = F/A
where F = force applied, A = area

28
Q

what does isoelectronic mean

A

they have the same electron configuration

29
Q

what groups of elements are isoelectronic

A

main group metals & noble gasses
they become isoelectronic with each other

30
Q

how do metals become isoelectronic

A

join with the halogen in the same row

31
Q

what are the main group metals

A

1, 2, 13-18 and not metalloids

32
Q

what is oxidation

A

the addition/removal of electrons (+ if removed, - if added)

33
Q

what are the oxidation state rules (in order)

A
  1. pure elements are all 0
  2. F = -1
  3. metals: 1A = +1, 2A = +2, Al = +3
  4. H is usually +1, but -1 with a metal
  5. O = -2
  6. Halogens are -1
34
Q

what are the oxidation sates of the 3 transition metals

A

Ag = +1, Zn = +2, Al = +3

35
Q

what is magnesium cholride

A

MgCl2

36
Q

what is aluminium carbonate

A

Al2(CO3)3

37
Q

are covalent bonds shared

A

yes between 2 atoms

38
Q

what is NaCl’s bond

A

ionic

39
Q

what forms covalent bonds (types of elements)

A

non-metals & metalloids

40
Q

what is carbon monoxide

A

CO

41
Q

what is carbon dioxide

A

CO2

42
Q

what is the greatest compound present in a solution

A

solvent

43
Q

what does a solvent do

A

dissolves a solute

44
Q

what are the different measurements of molarity

A

notes

45
Q
A

Chemistry (15 decks)

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