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Science > Periodic Table > Flashcards

Periodic Table Flashcards

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1
Q

What did Dimitri Mendeleev do?

A

-He was the first to arrange a periodic table in order of atomic mass
- noticed a repeating pattern of properties in the columns
-left spaces in his table for future discoveries

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2
Q

Mendeleev arranged a periodic table in order of ________ ______

A

Atomic Mass

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3
Q

___ years after Mendeleev, Henry Moseley arranged his table in order of _____ ____

A

50; Atomic number

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4
Q

In the periodic table columns are called ___ and __

A

Groups; families

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5
Q

how many columns in the periodic table

A

18

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6
Q

elements in the same groups have simmalar _____

A

Simmalar properties

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7
Q

in the columns of the periodic table, Atomic size increases from ____ to ___-

A

Top to bottom

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8
Q

Rows are called ____

A

Periods

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9
Q

the atomic number increases by ___ when you go across

A

1

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10
Q

in rows their are _____ _____ properties

A

No similar properties

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11
Q

single elements on the periodic table are ____

A

Oldest

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12
Q

In columns the number of ____ ____ an element has is the same.

A

Valance electrons

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13
Q

What is a valance electron

A

electrons in the outermost energy level of an atom

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14
Q

Most elements are

A

Metals

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15
Q

Metals are located ____ of the zig zag line

A

Left

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16
Q

physical properties of metal

A

-luster
-conducts heat & electricity
-high density
-high melting points
-ductile
-malleable

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17
Q

What does it mean if an element is Ductile

A

a metal able to be drawn out into a thin wire.

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18
Q

Chemical properties of metal

A

-1to 4 valance electrons
-lose valance electrons in chemical reactions
-will corrode in water or certain elements in The air

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19
Q

Non metals are most likely ___

A

Gas

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20
Q

nonmetals are found on the ___ of the zigzag line

A

Right

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21
Q

the physical properties of nonmetals are generall the ___ of metals

A

Opposite

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22
Q

Physical properties of Nonmetals

A

-no luster
-not conductive
-low density
-not ductile
-not malleable
-low melting point

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23
Q

Chemical properties of Nonnmetals

A

-have 5 to 8 valance electrons
-gain electrons in a chemical reaction

24
Q

Metalloids are ___ the zigzag line

A

Are on

25
Q

Metalloids have the properties of _______

A

Metals 7 nonmetals

26
Q

Properties of metalloids

A
  • dull or shiny
    -conducts heat & electricity better than nonmetals but not as well as metals
    -can be ductile or malleable
27
Q

Families of elements are the

A

Columns in the periodic table

28
Q

Family number 1 is the

A

Alkali metals

29
Q

Alkali metals have ____ a lance electron

A

1

30
Q

Alkali metals are ___ reactive and have never been seen in nature _____

A

Very; uncombined

31
Q

Alkali Earth Metals are family/ column Number ___

A

2

32
Q

Alkali Earth Metals all have __ valance electrons

A

2

33
Q

Transition metals are Families/columns ___ -___

A

3-12

34
Q

Alkali Earth Metals Have ___ valance electrons

A

1-2

35
Q

Alkali Earth Metals Are the elements we are ___ ____ with.

A

Most familiar with

36
Q

Boron family is family ___

A

13

37
Q

The boron families has ___ valance electrons

A

3

38
Q

Carbon family Is family __

A

14

39
Q

carbon family has _ valance electrons

A

4

40
Q

carbon family tends to ___ electrons

A

Share

41
Q

Nitrogen family is the ___ fam.

A

15th

42
Q

Nitrogen family has __ valance electrons

A

5

43
Q

Nitrogen family gains ___ electrons

A

3

44
Q

Oxygen family is the ___ fam

A

16t

45
Q

Oxygen fam Has __ valance electrons

A

6

46
Q

Oxygen fam gains __ electrons

A

2

47
Q

Halogen Family is fam__

A

17

48
Q

Halogen fam has __ valance electrons

A

7

49
Q

Halogen fam gains _ electron

A

1

50
Q

Noble Gasses or Inert Gases are fam __

A

18

51
Q

Noble gasses have __ valance electrons except for Helium which has __

A

8; 2

52
Q

Inner transition Metals or Rare earth metals include ____ and ____

A

Lanthanide; Actinide

53
Q

Lanthanide Series are

A

Not used very much

54
Q

Actunucide Series are.

A

All radioactive

55
Q

Each Familie/column have the same number of

A

Valance electrons.

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