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chemistry revision > periodic table > Flashcards

periodic table Flashcards

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1
Q

What is an isotope

A

an isotope is an atom with the same number of protons and different amounts of neutrons

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2
Q

What are the elements in the periodic table listed in order of

A

atomic number

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3
Q

What is the name of the group 7 elements

A

halogens

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4
Q

How many shells of electrons does potassium have

A

four

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5
Q

Give the chemical symbol of the group 6 element in period four

A

Se

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6
Q

Which atomic model showed up most of the atom is empty space

A

Nuclear model

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7
Q

What is the state of matter of fluorine

A

halogen

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8
Q

What is the trend in melting points in group 7 elements

A

It gets higher as you go down

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9
Q

What is the relative charge of a proton

A

+1

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10
Q

What is the relative charge of a neutron

A

0

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11
Q

What is the relative charge of an electron

A

-1

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12
Q

What is the relative mass of a proton

A

1

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13
Q

What is the relative mass of a neutron

A

1

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14
Q

What is the relative mass of an electron

A

1/1840

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15
Q

What is the gas given off when lithium reacts with water

A

Hydrogen

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16
Q

what is the maximum number of electrons that fit onto the second shell

A

eight

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17
Q

What is the maximum number of electrons that fit onto the first shell

A

Two

18
Q

What is the maximum number of electrons that fit onto the third shell

A

Eight

19
Q

what is the maximum number of electrons that fit onto the fourth shell

A

18

20
Q

What is the chemical symbol for tungsten

A

W

21
Q

what is the mass number of vanadium 

A



51

22
Q

Calcium is more reactive than magnesium true or false

A

True

23
Q

How many electrons are there in bromine

A

35

24
Q

What is the color of the flame produced when potassium reacts with water

A

lilac

25
Q

What electron arrangement in sodium

A

two, eight, one

26
Q

Which subatomic particle was not in the nuclear model

A

Neutron

27
Q

What element is a red brown liquid

A

bromine

28
Q

What are alkali metals stored in and why

A

they are stored in paraffin because they are very reactive to oxygen

29
Q

What is mass number

A

Number of protons plus the number of neutrons

30
Q

How many neutrons are there in boron

A

six

31
Q

which metallic element is a liquid at Room temperature

A

Mercury

32
Q

How many protons are there in the selenium

A

34

33
Q

Why do alkali metals float on water

A

they are less dense

34
Q

what is the state Matter of astatine

A

Solid

35
Q

What is the white solid product when calcium reacts with water

A

calcium hydroxide

36
Q

What is the trend in boiling points of the group 7 elements

A

it gets higher as you go down

37
Q

How do you find the number of electrons in an element

A

The number of electrons in an element is the same is the atomic number of the element. for example sodium, has an atomic number of 11 which means the number of electrons is 11-

38
Q

How do you find the number of protons in an element

A

The number of protons in an element is the same as the atomic number of the element. for example boron, Has an atomic number of five which means the number of protons is five+

39
Q

How do you find the number of neutrons in an element

A

to find the number of neutrons in an element take away the atomic number from the mass number. for example sodium, the mass number is 23 and the atomic number is 11 to find the number of neutrons you do 23 which is the mass number take away 11 which is the atomic number

40
Q

how did Mendeleev order his periodic table

A

Mendeleev ordered his periodic table by atomic weight. The current model of the periodic table is ordered by atomic number

chemistry revision (1 decks)

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