1EXAM- HChem Flashcards Preview

Junior Year > 1EXAM- HChem > Flashcards

Flashcards in 1EXAM- HChem Deck (105)
Loading flashcards...
0
Q

What is the N, A, and S number of H2O2?

A

20, 14, 6

1
Q

What is the N, A, and S number of SO3?

A

32, 24, 8

2
Q

What is the N, A, and S number of BCl3?

A

30, 34, 6

3
Q

Name this compound: HCl

A

Hydrochloric Acid

4
Q

Name this compound: CuCl2

A

Copper (II) Chloride

5
Q

Name this compound: CO

A

Carbon Monoxide

6
Q

Name this compound: HClO4(aq)

A

Perchloric Acid

7
Q

Name this compound: SiBr4

A

Silicon Tetrabromide

8
Q

Write the formula for this compound: Tin (II) fluoride

A

SnF2

9
Q

Write the formula for this compound: Hydroiodic Acid

A

HI(aq)

10
Q

Write the formula for this compound: diphosphorus pentoxide

A

P2O5

11
Q

How many atoms are in 4.0 x 10^-5 g of aluminum?

A

8.9 x 10^17

12
Q

What is the molar mass of (NH4)3PO4?

A

149.0 g/mol

13
Q

How many hydrogen atoms are in one molecule of (NH4)2PO4?

A

8

14
Q

What is the percent composition of hydrogen in water?

A

11%

15
Q

What is the percent nitrogen (by mass) in (NH4)2CO3?

A

29.2%

16
Q

What is the molar mass of CO2?

A

44.0 amu

17
Q

What is the molar mass of NaOCl?

A

74.5 amu

18
Q

What is the molar mass of Ca(OH)2?

A

74.1 amu

19
Q

Find the percent composition of each element in he compound: H2SO4

A

H = 2.0%, S = 32.7%, O = 65.2%

20
Q

Find the percent composition of each element in he compound: CO2

A

C = 27.3%, O = 72.7%

21
Q

Find the percent composition of each element in he compound: Al2S3

A

Al = 35.9%, S = 64.1%

22
Q

Copper has two isotopes. Copper-63 is 69.17% abundant and it has a mass of 62.9296 amu. Copper-65 is 30.83% abundant and it has a mass of 64.9278 amu. What is the weighted average mass of the two isotopes?

A

63.55 amu

23
Q

The identity of an atom is determined by the number of

A

Protons

24
Q

The number of protons and neutrons combined is the

A

Atomic mass

25
Q

Isotopes have the same number of _____, but a different number of ______

A

Protons, neutrons

26
Q

The number of protons is called the

A

Atomic number

27
Q

Janet, how do you spell the element F?

A

Fluorine

28
Q

What’s the symbol for tin

A

Sn

29
Q

What’s the symbol for silver

A

Ag

30
Q

What’s the symbol for strontium

A

Sr

31
Q

What’s the symbol for iron

A

Fe

32
Q

What element is Cd

A

Cadmium

33
Q

What element is V

A

Vanadium

34
Q

What element is Y?

A

Yttrium

35
Q

What do all nickel atoms have in common?

A

The same atomic number

36
Q

How is the charge of an ion determined?

A

If the number of electrons is greater or lesser than the protons?

37
Q

In a nuclide symbol, of he mass number and atomic number, which is on top and which is on the bottom?

A

The mass number is on the top and the atomic number is on the bottom

38
Q

Is length an intensive or extensive property?

A

Extensive

39
Q

Is hardness an intensive or extensive property?

A

Intensive

40
Q

Give some examples of intensive properties, and then extensive

A

I - density, malleable, boing point

E - length, volume, mass

41
Q

Give some examples of physical properties

A

Ductile, conductive, malleable

42
Q

Is age extensive or intensive? Gender.

A

Extensive, intensive

43
Q

Chemical or physical change? Lighting a match

A

C

44
Q

Chemical or physical change? Making paper from wood

A

C

45
Q

Chemical or physical change? Frying an egg

A

C

46
Q

Chemical or physical change? Boiling water to make Mac n Cheese

A

P

47
Q

Chemical or physical change? Making chex mix

A

P

48
Q

Pure substance or mixture? Purified air

A

M

49
Q

Pure substance or mixture? Element or compound?Sucrose

A

PS, compound

50
Q

Homogenous or Heterogenous? Wood

A

Heterogenous

51
Q

Homogenous or Heterogenous? Milk

A

Homogenous

52
Q

Homogenous or Heterogenous? Dirt

A

Heterogenous

53
Q

Homogenous or Heterogenous? Black coffee

A

Homogenous

54
Q

How many significant figures? 0.000983

A

3

55
Q

How many significant figures? 6.023 x 10^23

A

4

56
Q

How many significant figures? 2.0 x 10^-3

A

2

57
Q

How many significant figures? 3.456110

A

7

58
Q

How many significant figures? 12700.00

A

7

59
Q

How many significant figures? 12,700

A

3

60
Q

What wavelength corresponds to a frequency of 6.25 x 10^9 Hz?

A

.0480 m

61
Q

What is the correct electron configuration for nitrogen?

A

1s2, 2s2, 2p3

62
Q

Write the long form electron configuration for potassium

A

1s2, 2s2, 2p6, 3s2, 3p6, 4s1

63
Q

What is the frequency for a wavelength of 440 nm?

A

6.8 x 10^14 Hz

64
Q

What is empirical form

A

The simplest reduced form

65
Q

What is molecular form

A

The actual number of atoms in a compound

66
Q

What type of acid do you write “hydro” at the beginning of the name?

A

Binary acids

67
Q

What type of compound name do you use prefixes in?

A

Covalent

68
Q

How do you identify an oxyacid?

A

They will be made of three elements: H, O, and a third element

69
Q

What must an element be to be a binary or oxyacid?

A

(aq)

70
Q

In oxyacids, what means 1 extra O? 1 less? 2 less?

A

per + stem + ic, stem + ous, hypo + stem + ous

71
Q

What are the type 2?

A

“d-block”, tin, lead

72
Q

What must any acid begin with?

A

H

73
Q

Prefix for 7?

A

Hepta

74
Q

Prefix for 4?

A

Tetra

75
Q

How many dots can be on a side in an electron dot diagram?

A

2

76
Q

What is the bond hybridization of a water molecule?

A

sp3

77
Q

What word describes how electrons are involved in ionic bonding?

A

Transferred

78
Q

Draw some lewis structures, determine if they are polar, classify them, tell the bond hybridization

A

Can’t really put that in notecards

79
Q

What are the three types of bonding between molecules?

A

Hydrogen bonding, dipole-dipole, vanderwaals

80
Q

What type of bonding do all molecules have?

A

Vanderwaals

81
Q

How do you determine a polar molecule?

A

One or more line pairs on the central atom, different atoms connected to the central atom

82
Q

Study periodic table trends

A

They are probably way better to study visually anyway

83
Q

Classify the bond: Na — Cl

A

Ionic

84
Q

Classify the bond: Cu — O

A

Polar covalent

85
Q

Classify the bond: Cs — F

A

Ionic

86
Q

Classify the bond: Cl — Cl

A

Pure covalent

87
Q

C = ?

A

2.998 x 10^8 m/s

88
Q

H = ?

A

6.626 x 10^-34 J • s

89
Q

Atoms release energy when they jump to higher energy levels, true or false?

A

True

90
Q

Electrons give off energy in finite amounts called

A

Quantums

91
Q

Sublevels are divided into

A

Orbitals

92
Q

Each orbital can hold up to ____ electrons

A

2

93
Q

Electrons give off energy in the form of a _____ when returning to the ground state

A

Photon

94
Q

What scientist proposed the idea that electrons travel in fixed paths?

A

Bohr

95
Q

When an electron moves to the ground state, energy is ______

A

Absorbed

96
Q

No two electrons can have the same four quantum numbers. True or false?

A

True

97
Q

What does the primary quantum number tell you?

A

What energy level the electron is in

98
Q

Why do electrons move?

A

To achieve stability

99
Q

Half filled orbitals are more stable than partially filled, T or F?

A

True

100
Q

Know crest, trough, wavelength, and amplitude

A

🍕

101
Q

Amplitude establishes ________

Wavelength establishes __________

A

Intensity of shade, color

102
Q

Light travels on ______ waves

A

Transverse

103
Q

OIL RIG means what

A

Oxidation Is Loss, Reduction Is Gain

104
Q

If an element has three letters it is

A

Man made