Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

8th grade pysical science > Chem Final > Flashcards

Chem Final Flashcards

1
Q

Who discovered the PT

A

Dimitri Mendeleev

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

How many elements are on the PT

A

118

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

How many natural elements are on the PT

A

90-94

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

How many groups are there on PT and what direction do they go?

A

18 down

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

How many main groups are there?

A

8

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

How many periods are there and what direction do they go?

A

7 sideways

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What does the main group number show?

A

Valence electrons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What does the period number show.

A

of electron shells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

How is the PT arranged?

A

By atomic number

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What do you need to remember about oxidation numbers?

A

Positive gives away electrons

Negative receives electrons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What are the main types of elements?

A

Metal
Metalloid
Nonmetal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What are the main groupings of atoms?

A

Alkali metals Nonmetals- nonmetal
Alkaline earth metals Halogens- nonmetal
Transition metals Noble gasses- nonmetal
Other metals Lanthanides
Metalloids Actinides

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Most reactive grouping?

A

Alkali metals

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Most unreactive grouping?

A

Noble gasses

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Most abundant elements?

A

O, Si, Al, Fe

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Most reactive element?

A

Francium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Elements in the iron triangle?

A

Fe, Co,Ni

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Elements, liquids at 18 C

A

Hg, Br

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

2m not silver or gray

A

Au, Cu

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Metal properties

A 
Conductive 
Most are silver or gray
Malleable
Ductile
Solid at 18 C (except Hg)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Ionic bond properties

A 
Gives away/ takes e
M and nm
solid at 18 C
melting point is high
boiling point is high
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

covalent bond properties

A 
share e
nm and nm
liquid or gas at 18C
polarity is low
melting point is low
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

metallic bond properties

A

m and m

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

what’s IUPAC

A

International Union of Pure and Applied Chemistry

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

ion

A

an element with more or less electrons than normal

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

synthesis

A

2 or more compounds or elements combine to make a more complex substance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

decompostion

A

compounds break down into simpler substances

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

single replacement

A

occurs when one substance replaces another

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

double replacement

A

occurs when different atoms in two different compounds trade places

30
Q

evidence of a chem reaction

A 
Color changes
Temperature changes
Solid (precipitate)
odor
gas is produced
31
Q

prefix mono

A

one

32
Q

prefix di

A

two

33
Q

prefix tri

A

three

34
Q

prefix tetra

A

four

35
Q

prefix penta

A

five

36
Q

prefix hexa

A

six

37
Q

prefix hepta

A

seven

38
Q

prefix octa

A

eight

39
Q

prefix nona

A

nine

40
Q

prefix deca

A

ten

41
Q

atomic number shows

A

of protons and electrons

42
Q

atomic mass

A

mass of p and n

it is the decimal

43
Q

one amu is

A

the mass of one twelfth of a carbon atom

44
Q

nucleus

A

positive
made of p and n
held together by the strong force
discovered by Rutherford

45
Q

electron charge

A

negative

46
Q

e distribution

A

2 8 18 32 32 18 8 2

47
Q

who discovered e

A

J J Thompson

48
Q

four universal forces

A

gravity-graviton
EM-photon
weak-wisbosin
strong-gluon

49
Q

quarks

A

up down charmed strange

50
Q

Law of conservation of matter

A

matter cannot be created nor destroyed, it just changes form

51
Q

p charge

A

positive

52
Q

n charge

A

neutral

53
Q

what is Dalton’s atomic number

A

an idea

54
Q

What is Thompson’s atomic model?

A

a positively charged ball with negative balls attached to it

55
Q

Rutherford’s atomic model

A

electrons floating around a positive ball. Lots of empty space

56
Q

what is Bohr’s atomic model?

A

electrons floating around a clump of protons and neutrons

57
Q

quarks in a p

A

two up one down

58
Q

quarks in an e

A

two down one up

59
Q

describe the big bang

A

13.8 billion years ago
time started
pure energy
the four forces were unified

60
Q

plank second

A

10 to the -43 power of a second

61
Q

inflation

A

the universe continuing to expand

62
Q

higgs field

A

mass was created

quarks

63
Q

baryogengesis

A

war between matter and antimatter. matter won

64
Q

nucleosynthesis

A

formation of p and n

65
Q

star formation types

A

OBAFGKM

66
Q

what does the word atom mean

A

indivisible

67
Q

who discovered the electron

A

J J Thompson

68
Q

Who discovered the proton

A

Rutherford

69
Q

who discovered the neutron?

A

Bohr

70
Q

Plank epoch

A

the first 10 to the -43 power of a second

71
Q

cation

A

an ion with an overall positive charge

72
Q

anion

A

an ion with an overall negative charge

8th grade pysical science (3 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions