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Concepts of Matter > 10-19-15 > Flashcards

10-19-15 Flashcards

1
Q

protons charge

A

positive +

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2
Q

neutrons location

A

nucleus

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3
Q

neutrons charge

A

neutral

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4
Q

electrons location

A

around the nucleus

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5
Q

electrons charge

A

negative -

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6
Q

Is the nucleus of an atom positive, negative, or neutral?

A

positive and neutral

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7
Q

Is the atoms overall charge positive, negative or neutral?

A

neutral

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8
Q

Why do atoms have an overall neutral charge?

A

protons and electrons zero each other out

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9
Q

according to the MAT, the exact location of an __________ is uncertain.

A

electron

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10
Q

the region where there is a probability of finding electrons

A

electron cloud

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11
Q

who first created the periodic table of elements

A

Mendeleev

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12
Q

how were the first elements arranged

A

by increasing atomic number

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13
Q

what is a period

A

row of elements

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14
Q

what is a group/family

A

elements in a column with similar properties

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15
Q

what is an isotope

A

ionized atom

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16
Q

elements in the same group have the same ___________.

A

valence shell count

17
Q

what is a valence electron

A

outermost electrons on diagram

18
Q

the general trend of valence electrons going across the table left to right

A

valence electrons increase

19
Q

metal characteristics

A

conductive, malleable, shiny

20
Q

where are metals located on the table

A

left of the staircase

1-13

21
Q

nonmetal characteristics

A

low boiling point, gasses, vary in chemical and physical properties

22
Q

where are nonmetals located (generally)

A

14-17

right of staircase

23
Q

what is a metalloid

A

elements that have characteristics of both metals and nonmetals

24
Q

metalloid elements

A

BAGS

boron, arsenic, germanium, silicon

25
Q

atomic number is always equal to the number of

A

protons or electrons

26
Q

the mass number is always equal to the number of

A

protons + neutrons

27
Q

which two subatomic particles have the same mass

A

protons and electrons

28
Q

group 1

A

alkali metals

29
Q

group 2

A

alkaline earth metals

30
Q

groups 3-16

A

transition metals

31
Q

group 17

A

nonmetals

32
Q

group 18

A

noble gasses

33
Q

elements 57-71

A

lanthanoids

34
Q

elements 89-103

A

actinoids

35
Q

location of proton

A

nucleus

Concepts of Matter (3 decks)

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