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Chemistry GCSE > Atoms Elements and Compounds > Flashcards

Atoms Elements and Compounds Flashcards

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1
Q

name the particles that are found in the nucleus of an atom

A

-protons
-neutrons
-electrons

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2
Q

what is the charge of a proton

A

positive 1 (+1)

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3
Q

what is the charge of a neutron

A

neutral ( 0)

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4
Q

what is the charge of an electron

A

negative 1 (-1)

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5
Q

what is the relative mass of a proton

A

1

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6
Q

what is the relative mass of a neutron

A

1

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7
Q

what is the relative mass of a electron

A

0
1/2000
(very small)

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8
Q

what is the overall charge of an atom

A

neutral or 0

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9
Q

why do atoms have a neutral charge

A

they have the same number of positive protons and negative electrons
-charges cancel out

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10
Q

what does the atomic number of an atom tell you

A

the number of protons the atom has

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11
Q

what does the mass number of an atom tell you

A

total number of
protons + neutrons
an atom has

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12
Q

how can you use the atomic number and mass number of an atom to work out the amount of neutrons

A

number of neutrons= mass number- atomic number

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13
Q

what are the names given to these numbers

14
N
7

A

14= mass number= TOTAL SUM OF PROTONS+NEUTRONS
7=atomic number=PROTONS
N= atomic symbol

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14
Q

how many approx different elements are there

A

100

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15
Q

state what an element is

A

a substance made up of atoms that all have the SAME number of PROTONS in their nucleus

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16
Q

what are isotopes

A

they have the SAME number of PROTONS but a DIFFERENT number of NEUTRONS

17
Q

isotopes have the what:
——- number of protons (atomic number)
——-number of neutrons (mass number)

A

same number of protons
different number of neutrons

18
Q

Carbon -12 and carbon -13 are isotopes of carbon, how do they differ

A

Carbon-12 has 1 less neutron

19
Q

what does relative atomic mass mean

A

an average of the masses of the atoms of the isotopes

20
Q

whats the equation for relative atomic mass

A
21
Q

what is a compound

A
22
Q

what is a mixture

A
23
Q

whats a molecule

A
24
Q

do compounds have the same properties as the atoms theyre made from

A

Chemistry GCSE (6 decks)

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