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Subjects > Chemistry - atoms elements and compounds YR 9 > Flashcards

Chemistry - atoms elements and compounds YR 9 Flashcards

1
Q

What is an atom

A

the smallest part of an element

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2
Q

what is an element

A

A pure substance containing only one type of atom

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3
Q

what is the radius of an atom

A

1X10 to the power of minus 10 m

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3
Q

what is a compound

A

formed from elements by chemical reactions

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4
Q

what is the radius of a nucleus of an atom

A

1X10 to the power of minus 14 m

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5
Q

what is in the first shell of an electronic configuration?

A

2 electrons

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6
Q

what is in the second shell of an electronic configuration?

A

8 electrons

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7
Q

what is in the third shell of an electronic configuration?

A

8 electrons

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8
Q

what is in the fourth shell of an electronic configuration?

A

18 electrons

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9
Q

what is the relative charge of a
proton
neutron
electron

A

neutron - 0
proton - +1
electron - -1

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10
Q

what’s the formula for atomic mass of an element

A

protons + neutrons

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11
Q

whats the formula for the atomic number of an element

A

protons

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12
Q

what is NH4

A

ammonium

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13
Q

What is ammonium

A

NH4

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14
Q

What is Cu2

A

copper

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15
Q

what is copper (2)

A

Cu2

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16
Q

what is Zn2

A

Zinc

17
Q

what is Zinc

A

Zn2

18
Q

what is lead

A

Pb

19
Q

what is iron (2) and iron (3)

A

Fe2 & Fe3

20
Q

What is Pb

A

lead

21
Q

What is OH

A

Hydrozide

22
Q

what is hydroxide

A

OH

23
Q

what is nitrate

A

NO

24
Q

what is NO

A

nitrate

25
Q

What is OH

A

Hydroxide

26
Q

what is SO2

A

Sulfate

27
Q

what is sulfate

A

SO4 - 2

4 OXYGEN -2 CHARGE

28
Q

What is carbonate

A

C03 2- (3 0xygen - 2 charge)

29
Q

what is CO3 -2 (3 oxygen -2 charge)

A

CARBONATE

30
Q

1800s what did John Dalton discover

A

tiny spheres that couldn’t be divided

31
Q

what did JJ Thomasson discover in 1890

A

The plum pudding model sphere of positive charge with negative charges spread evenly

32
Q

What did Neils bhor discover

A

electrons orbit the nucleus at specific distances in fixed energy levels

33
Q

What did james chadwick discover

A

he provided evidence for the existence of neutrons iN a nucleus

34
Q

what does soluble mean

A

something that can be disolved

35
Q

what does solvent mean

A

a liquid used to dissolve other substance

36
Q

what does solute mean

A

a substance which has been dissolved

37
Q

what is a solutiob

A

a mixture of a solute and the solventq

38
Q

what does insoluble mean

A

something that cant be dissolved

39
Q

what dies a mixture mean

A

different types of particles not joined together

Subjects (18 decks)

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