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Sceince > Ch 3 8t > Flashcards

Ch 3 8t Flashcards

0
Q

-

A

Electron

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1
Q

+

A

Proton

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2
Q

No charge

A

Neutron

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3
Q

Atoms are blank

A

Neutral

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4
Q

Where are proton and neutrons found

A

In the nucleus

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5
Q

What is the cloud around the nucleus made up mostly of

A

Electrons

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6
Q

It would take about 2000 blanks to equal the mass of 1 protons

A

Electrons and protons

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7
Q

An atoms mass is measured in what units

A

Atomic mass unit

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8
Q

Each atom of an element has the same number of blank

A

Protons

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9
Q

The number of protons is the blank

A

Atomic number

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10
Q

The number of neutrons can vary called a blank

Same number of protons different number of neutrons

A

Isotopes

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11
Q

The mass number (atomic mass) is the total of blank and blank of all isotopes (an average)

A

Protons and neutrons

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12
Q

Who discovered a pattern to help organize the periodic table

A

Dmitri Mendeleev

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13
Q

Dmitri Mendeleev said that a pattern of properties appeared when they were arranged by increasing the blank in

This is in the periodic table

A

Atomic mass

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14
Q

Who discovered away to measure protons soon periodic table was arranged by increasing atomic number instead of increasing atomic mass

A

Henry Moseley

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15
Q

A horizontal rows called A blank as you move across the blank properties change

A

Period

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16
Q

It vertical column is called a blank or blank elements in each has similar properties

A

Group or family

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17
Q

The most reactive are to the blank of the periodic table unreactive Cassis are far to the blank

A

Left and right

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18
Q

Name physical properties of metals

A

Shiny malleable ductile able to conduct electricity and heat so metals are magnetic most are solid at room temp exception is Mercury

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19
Q

Name chemical properties of metals

A

React by losing electrons to her two other Adams some metals are more reactive than others some metals corrode very easily destruction of metals through corrosion rusting

20
Q

What is group one of the metal

A

Alkali metals

21
Q

What are some properties of alkali metals

A

Lose one electron, very reactive never found uncombined in nature, shiny, soft easily cut

22
Q

Who do you love the most

A

Mom

23
Q

What is the name of group 2

A

Alkaline earth metals

24
Q

What are the properties of group to alkaline earth metals

A

Hard grayish white good conductors lose two electrons less reactive than group 1 still never found uncombined

25
Q

What is the name of the group 3 to 12

A

Transition metals

26
Q

What are some properties of group 3 to 12 transition metals

A

Most are hard and shiny good conductors colorful less reactive finger up one or two

27
Q

Metals found in group 1314 and 15 are

very reactive or not very reactive

A

Not very reactive

28
Q

Coating of a metal with zinc to prevent rusting

A

Galvanization

29
Q

What is the top bro of rare earth metals called

A

Lanthanides

30
Q

What are some characteristics of lanthanides

A

Soft malleable shiny hi conductivity mixed with other metals to form alloys make original metal stronger different lanthanides are usually found together in nature

31
Q

What is the bottom row of rare earth metals called

A

Actinides

32
Q

What are some characteristics of actinides

A

Only thorium and uranium occur naturally, nuclei very unstable break apart very easily

33
Q

What are characteristics of synthetic elements

A

Atomic number higher than 92 not found actually on earth nuclear particles crash into each other use particle Excelerator

34
Q

What are some physical properties of nonmetals

A

Poor conductors of heat and electricity, good insulators, gold, brittle, 10 to 16 nonmetals are gases only one liquid

35
Q

What are some chemical properties of nonmetals

A

Very reactive and form compounds easily group 18 is totally unreactive, usually gain or share electrons, can form compounds with metals or not

36
Q

What is the name of group 14

A

The carbon family

37
Q

What are some characteristics of the carbon family

A

Again, lose, or share for electrons

Carbon is the only nonmetal

38
Q

What is the name of group 15

A

Nitrogen family

39
Q

What are some characteristics of the nitrogen family

A

Gain three electrons nitrogen makes up 80% of the atmosphere

40
Q

What is the name of group 16

A

Oxygen family

41
Q

What are some characteristics of the oxygen family

A

Game two electrons, oxygen we breathe it as O2

42
Q

What is the name of group 17

A

Halogen family

43
Q

What are some characteristics of the halogen family

A

Mean salt forming, all are nonmetals except for astatine gain 1 electron what electron, very reactive

44
Q

What is the name of group 18

A

Noble gases

45
Q

What are some characteristics of noble gases

A

Don’t gain or lose electrons no compounds formed, all exist in the atmosphere in small amounts

46
Q

What are some characteristics of hydrogen

A

One proton one electron some Adams have neutrons, not part of a family – chemical properties are different from everything else, 90% of universe 1% of earths crust, oceans and atmosphere
Rarely found in pureform

47
Q

What are some properties of metalloids

A

Forms the border between metals and nonmetals, I have characteristics of both, brittle, hard, somewhat reactive, good semi conductors – Conduct electricity under certain conditions

Sceince (5 decks)

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