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Flashcards in 1EXAM- HChem Deck (105):
0

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

32, 24, 8

1

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

20, 14, 6

2

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

30, 34, 6

3

Name this compound: HCl

Hydrochloric Acid

4

Name this compound: CuCl2

Copper (II) Chloride

5

Name this compound: CO

Carbon Monoxide

6

Name this compound: HClO4(aq)

Perchloric Acid

7

Name this compound: SiBr4

Silicon Tetrabromide

8

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

SnF2

9

Write the formula for this compound: Hydroiodic Acid

HI(aq)

10

Write the formula for this compound: diphosphorus pentoxide

P2O5

11

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

8.9 x 10^17

12

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

149.0 g/mol

13

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

8

14

What is the percent composition of hydrogen in water?

11%

15

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

29.2%

16

What is the molar mass of CO2?

44.0 amu

17

What is the molar mass of NaOCl?

74.5 amu

18

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

74.1 amu

19

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

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

20

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

C = 27.3%, O = 72.7%

21

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

Al = 35.9%, S = 64.1%

22

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?

63.55 amu

23

The identity of an atom is determined by the number of

Protons

24

The number of protons and neutrons combined is the

Atomic mass

25

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

Protons, neutrons

26

The number of protons is called the

Atomic number

27

Janet, how do you spell the element F?

Fluorine

28

What's the symbol for tin

Sn

29

What's the symbol for silver

Ag

30

What's the symbol for strontium

Sr

31

What's the symbol for iron

Fe

32

What element is Cd

Cadmium

33

What element is V

Vanadium

34

What element is Y?

Yttrium

35

What do all nickel atoms have in common?

The same atomic number

36

How is the charge of an ion determined?

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

37

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

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

38

Is length an intensive or extensive property?

Extensive

39

Is hardness an intensive or extensive property?

Intensive

40

Give some examples of intensive properties, and then extensive

I - density, malleable, boing point
E - length, volume, mass

41

Give some examples of physical properties

Ductile, conductive, malleable

42

Is age extensive or intensive? Gender.

Extensive, intensive

43

Chemical or physical change? Lighting a match

C

44

Chemical or physical change? Making paper from wood

C

45

Chemical or physical change? Frying an egg

C

46

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

P

47

Chemical or physical change? Making chex mix

P

48

Pure substance or mixture? Purified air

M

49

Pure substance or mixture? Element or compound?Sucrose

PS, compound

50

Homogenous or Heterogenous? Wood

Heterogenous

51

Homogenous or Heterogenous? Milk

Homogenous

52

Homogenous or Heterogenous? Dirt

Heterogenous

53

Homogenous or Heterogenous? Black coffee

Homogenous

54

How many significant figures? 0.000983

3

55

How many significant figures? 6.023 x 10^23

4

56

How many significant figures? 2.0 x 10^-3

2

57

How many significant figures? 3.456110

7

58

How many significant figures? 12700.00

7

59

How many significant figures? 12,700

3

60

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

.0480 m

61

What is the correct electron configuration for nitrogen?

1s2, 2s2, 2p3

62

Write the long form electron configuration for potassium

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

63

What is the frequency for a wavelength of 440 nm?

6.8 x 10^14 Hz

64

What is empirical form

The simplest reduced form

65

What is molecular form

The actual number of atoms in a compound

66

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

Binary acids

67

What type of compound name do you use prefixes in?

Covalent

68

How do you identify an oxyacid?

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

69

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

(aq)

70

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

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

71

What are the type 2?

"d-block", tin, lead

72

What must any acid begin with?

H

73

Prefix for 7?

Hepta

74

Prefix for 4?

Tetra

75

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

2

76

What is the bond hybridization of a water molecule?

sp3

77

What word describes how electrons are involved in ionic bonding?

Transferred

78

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

Can't really put that in notecards

79

What are the three types of bonding between molecules?

Hydrogen bonding, dipole-dipole, vanderwaals

80

What type of bonding do all molecules have?

Vanderwaals

81

How do you determine a polar molecule?

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

82

Study periodic table trends

They are probably way better to study visually anyway

83

Classify the bond: Na — Cl

Ionic

84

Classify the bond: Cu — O

Polar covalent

85

Classify the bond: Cs — F

Ionic

86

Classify the bond: Cl — Cl

Pure covalent

87

C = ?

2.998 x 10^8 m/s

88

H = ?

6.626 x 10^-34 J • s

89

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

True

90

Electrons give off energy in finite amounts called

Quantums

91

Sublevels are divided into

Orbitals

92

Each orbital can hold up to ____ electrons

2

93

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

Photon

94

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

Bohr

95

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

Absorbed

96

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

True

97

What does the primary quantum number tell you?

What energy level the electron is in

98

Why do electrons move?

To achieve stability

99

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

True

100

Know crest, trough, wavelength, and amplitude

🍕

101

Amplitude establishes ________
Wavelength establishes __________

Intensity of shade, color

102

Light travels on ______ waves

Transverse

103

OIL RIG means what

Oxidation Is Loss, Reduction Is Gain

104

If an element has three letters it is

Man made