Brainscape's Knowledge GenomeTM

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


See full index

CHM 121 Final Exam Questions > CHM 121 Test 2 > Flashcards

CHM 121 Test 2 Flashcards

1
Q

In any balanced chemical equation, the elements from reactants to products side of the reaction will be ____.

A

equivalent

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

A chemical equation is balanced when _____.

A

the number element count is the same in reactants and products

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

Which of the following correctly gives the correct coefficients for the reaction below?
_Fe2 S3 + _HCl -> _FeCl3 + _H2 S

A

1,6,2,3

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

What coefficient is placed in front of CO2 to balance the following equation?
_C5H8 + O2 -> _CO2 + _H2O

A

5

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

What coefficient is placed in front of H2O to balance the following equation?
_C5H8 + O2 -> _CO2 + _H2O

A

4

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

What coefficient is placed in front of H2O to balance the following equation?
_H2 + _O2 -> _H2O

A

2

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

What coefficient is placed in front of H2 to balance the following equation?
_H2 + _O2 -> _H2O

A

2

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

What coefficient is placed in front of H2O to balance the following equation?
_C2H6 + _O2 -> _CO2 + _H2O

A

6

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

What coefficient is placed in front of O2 to balance the following equation?
_C2H6 + _O2 -> _CO2 + _H2O

A

7

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

What coefficient is placed in front of H2O to balance the following equation?
_H3PO4 + _Ca(OH)2 -> _CaHPO4 + _H2O

A

2

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

In the following reaction, what is the correct coefficient for chlorine?
_Al + _Cl2 -> _AlCl3

A

3

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

As the temperature of a gas increases the _______ also increases.

A

pressure

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

Which measurement correctly describes the temperature of a gas?

A

315 K

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

What is the correct unit of pressure used in gas law calculations?

A

Atmosphere

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

The name of Ca(OH)2 is ________.

A

calcium hydroxide

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

The correct formula for the compound formed from Al and Cl is _______.

A

AlCl3

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

The correct formula for Iron (III) oxide would be ________.

A

Fe2O3

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

The main type of intermolecular forces between molecules of water (H2O) are _________.

A

hydrogen bonds

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

The bond in HBr is a(n) ___________.

A

polar covalent bond

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

The main type of intermolecular forces between molecules of hydroiodic acid (HI) are _________.

A

dispersion forces

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

The main type of intermolecular forces between molecules of methane (CH4) are __________.

A

dispersion forces

21
Q

The bond in Br2 is a(n) ________.

A

nonpolar covalent bond

22
Q

The number of dots in the electron dot symbol of aluminum is ________.

A

three

23
Q

The number of dots in the electron dot symbol of magnesium is _________.

A

two

24
Q

The main type of intermolecular forces between molecules of bromine (Br2) are _________.

A

dispersion factors

25
Q

The main type of intermolecular forces between molecules of hydrochloric acid (HCl) are _______.

A

diapole-diapole attractions

26
Q

The bond in hydrochloric acid (HCl) is a(n) _________.

A

polar covalent

27
Q

When a cation is formed from a representative element ________.

A

electrons are lost and the ion is smaller

28
Q

The ion of aluminum is __________.

A

Al3+

29
Q

How many electrons will chlorine gain or lose when it forms an ion?

A

gain 1

30
Q

An ionic compound _________.

A

has a net charge of zero

31
Q

What is the correct formula for a compound formed from the elements Al and O is __________.

A

Al2O3

32
Q

What is the correct formula for the oxide ion?

A

O2-

33
Q

The correct formula for the compound formed from Mg and S is _________.

A

MgS

34
Q

Which one of the following compounds contains an ion with a 3+ charge?

A

FeCl3

35
Q

The compound MgCl2 is named _________.

A

magnesium chloride

36
Q

The correct name for the compound NCl3 is ___________.

A

nitrogen trichloride

37
Q

The molecule CO2 has ________ valance electrons.

A

16

38
Q

The name of the Cu+ ion is ________.

A

copper (I)

39
Q

What is the correct formula for the iron (II) ion?

A

Fe2+

40
Q

What is the correct formula for iron (III) ion?

A

Fe2S3

41
Q

Which of the following polyatomic ions has a 3- ionic charge?

A

phosphate

42
Q

The correct name for the compound N2O3 _______.

A

dinitrogen trioxide

43
Q

The molecule SO3 has ________ valence electrons.

A

24

44
Q

Which of the following substances contains a nonpolar covalent bond?

A

N2

45
Q

Which of the following compounds contains an ionic bond?

A

CaO

46
Q

The shape of the methane molecule (CH4) is _________.

A

tetrahedral

47
Q

The shape of the carbon dioxide molecule (CO2) is ________.

A

linear

48
Q

The shape of the ammonia molecule (NH3) is ________.

A

trigonal pyramidal

49
Q

The shape of a molecule with a central atom that has two bonded atoms and two lone pairs is ____________.

A

bent (109)

CHM 121 Final Exam Questions (1 decks)

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