Brainscape's Knowledge GenomeTM

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


See full index

Chemistry > Deck 15 (281 - 300) > Flashcards

Deck 15 (281 - 300) Flashcards

1
Q
  1. Which process represents a chemical change?

a. oxidation
b. sublimation
c. evaporation
d. condensation

A

oxidation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q
  1. PIC
A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q
  1. PIC
A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q
  1. In a reaction, the ions of two compounds exchange places in aqueous solution to form two new compounds. This reaction is called:

a. synthesis reaction
b. decomposition reaction
c. single-displacement reaction
d. double-displacement reaction

A

double-displacement reaction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q
  1. PIC
A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q
  1. Vinegar and oil form:

a. a homogenous mixture
b. a chemical change
c. a compound
d. none of the previous answers

A

none of the previous answers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q
  1. PIC
A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q
  1. What is the range of the pH scale from lowest to highest?
A

0 to 14

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q
  1. PIC
A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q
  1. Give the number of lone pairs in the molecule of nitrogen
A

2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q
  1. Identify non-reducing sugar:

a. maltose
b. fructose
c. sucrose
d. lactose

A

sucrose

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q
  1. Evaporation of mercury is:

a. mercury does not evaporate
b. a chemical change
c. a heterogenous mixture
d. a physical change

A

a physical change

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q
  1. Write the reaction between formic acid and methyl alcohol
A

HCOOH + CH3OH -> HCOOCH3 + H2O

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q
  1. PIC
A
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q
  1. 50g of substance A and 100g of substance B were dissolved in 350g of solvent. Calculate mass fractions of substances A and B in the prepared solution
A

WA = 0.1
WB = 0.2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q
  1. In the reaction represented by the following equation, the conjugate acid-base pair is:

H2C2O4(aq) + CH3NH2(aq) <-> HC2O4-(aq) + CH3NH3+(aq)

a. H2C2O4(aq) and CH3NH2(aq)
b. H2C2O4(aq) and CH3NH3+
c. CH3NH2(aq) and CH3NH3+(aq)
d. HC2O4-(aq) and CH3NH3+(aq)

A

CH3NH2(aq) and CH3NH3+(aq)

18
Q
  1. How many enantiomers of glucose do you know?
19
Q
  1. Give the number of lone pairs in the molecule of ammonia
20
Q
  1. Identify the elimination reaction:

a. CH4 + Cl2 -> CH3Cl + HCl
b. CH2 = CH2 + I2 -> CH2I-CH2I
c. CH3CH2Cl + NaOH -> CH2 = CH2 + NaCl + H2O
d. CH3COOH + NaOH -> CH3COONa + H2O

A

CH3CH2Cl + NaOH -> CH2 = CH2 + NaCl + H2O

Chemistry (25 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions