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Chemisty > National 5 chemisrty > Flashcards

National 5 chemisrty Flashcards

1
Q

whats an ion

A

a particle like an atom that has lost or gained electronto become stable

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2
Q

what position does the electron have in the atom and what is its charge?

A

it orbits the nucleus and its charge is -1

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3
Q

what position does the neutron have in the nucleus? and whats its charge

A

in the nucleus and its charge is 0

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4
Q

what position does the proton have in the nucleus and whats its charge?

A

in the nucleus and its charge is 1 plus

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5
Q

what does the atomic number equal

A

Number of protons

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6
Q

what does the mass number equal

A

number of protons plus neutrons

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7
Q

what does the mass of neutrons equal

A

the mass number minus the protons

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8
Q

What does delta triangle mean

A

change in

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9
Q

whats an isotope

A

an atom of the same element with the same atomic number with a different number of neutrons in there nuclei

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10
Q

what is background radiation

A

a low level of radiation that that occurs all of the time

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11
Q

what is a source of background radiation

A

space, the ground

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12
Q

whats a Radioisotope

A

an unstable nuclei

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13
Q

what is radioactive decay

A

an unstable nuclei that releases different types of radiation to become stable

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14
Q

what is the 3 different types of radiation

A

alpha, beta, gamma

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15
Q

what is an alpha particles charge

A

2 plus

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16
Q

whats a beta particles charge

A

1 negative

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17
Q

whats a gamma particle charge

A

0

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18
Q

what is he mass of an alpha particle

A

4

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19
Q

whats the mass of a beta particle

A

0

20
Q

whats the mass of the gamma particle

A

0

21
Q

whats half-life

A

the time it takes for half of the unstable nuclei in a sample to decay or for the activity of the sample to halve or for the count rate to halve

22
Q

whats a molecule

A

when two or more atoms chemically bond together and its only with non metals are together

23
Q

whats an element

A

a pure substance which is made from only one type of atom

24
Q

whats a compound

A

when atoms are from different elements

25
Q

what covalent bonding

A

when non metal atoms are joined together

26
Q

whats a diatomic molocule

A

a molecule composed of only 2 atoms covalently bonded together

27
Q

whats an electrostatic attraction

A

when 2 positive nuclei have a common attraction for a shared pair of negative electrons

28
Q

what is the shape is this H-H or has one bond

A

linear

29
Q

what shape is this when it has 2 bonds and 3 atoms

A

angular

30
Q

what shape is it when it has 3 bonds and 4 atoms

A

trigonal pyramid

31
Q

what shape is it when it has 4 bonds and 5 atoms

A

tetrahedral

32
Q

whats ionic bonding

A

when metals and non-metals join together

33
Q

hows an ion formed

A

when atoms loose or gain electrons

34
Q

whats metallic bonding

A

only in metals

35
Q

what structure does covalent network bonding have and does it have a high or low mp and bp

A

NETWORK and high mp and bp

36
Q

what structure does ionic bonding have and does it have a high or low mp and bp

A

lattice and high mp and bp

37
Q

what structure dose metallic bonding have and does it have a high or low mp and bp

A

lattice and high mp and bp

38
Q

what structure does covalent molecules have and does it have a high or low mp and bp

A

molecules low mp and bp

39
Q

do ionic metals conduct

A

some dissolve and some don’t the ones that conduct dissolve in solution due to the negative electrons allowing them to move

40
Q

do metallic metals conduct

A

yes

41
Q

do covalent network conduct

A

no except graphite

42
Q

do covalent molecules conduct

A

no

43
Q

what does conduction of electricity mean

A

charged particles

44
Q

what does GFM stand for

A

Grand mass formula

45
Q
A

Chemisty (5 decks)

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