Answers2025-2026_MDCPS_2003345_Chemistry_1_A-CRCumulative Exam

Cumulative Exam — Cumulative exam Answers

50 verified answers2 views
41
Free Preview

Many pharmaceutical drugs are organic compounds that were originally synthesized in the laboratory. Which two scientific disciplines are bridged by pharmaceutical drugs?

A
chemistry and forensics
B
chemistry and medicine
C
biology and forensics
D
biology and criminology
42
Free Preview

Two students are given two different size blocks of the same substance and are instructed to determine the properties of the substance. Which statement describes a property that will be the same for both students?

A
length because it is an extensive property
B
mass because it is an extensive property
C
boiling point because it is an intensive property
D
volume because it is an intensive property
43

What is the element Ar classified as in the periodic table?

A
a noble gas
B
a halogen
C
a metalloid
D
a metal
44

Which best describes a compound such as magnesium oxide?

A
an impure substance that is made up of two elements
B
a mixture of two uncommon substances
C
a mixture of two common elements
D
a pure substance that is made up of different elements
45

In which orbitals would the valence electrons for carbon (C) be placed?

A
s orbital and d orbitals
B
s orbital only
C
p orbitals only
D
s orbital and p orbitals
46

Which is a component of John Dalton’s atomic theory?

A
The ratio of atoms in a compound is fixed.
B
The atoms of different elements are the same.
C
An atom is a small particle of matter that can be broken down.
D
A reaction can create or destroy atoms as well as rearrange them.
47

The image shows what happens when an antacid tablet is placed in water.The process shown in the image can best be described as a

Question illustration
A
rapid chemical reaction where gas is released.
B
slow chemical reaction where light is being given off.
C
slow chemical reaction where the liquid changes color.
D
rapid chemical reaction where heat is suddenly released.
48

Consider the word equation.calcium hydroxide + hydrochloric acid calcium chloride + waterWhich is the corresponding formula equation?

Question illustration
A
Upper C a upper C l subscript 2 right arrow upper C a (s) plus upper C l subscript 2 (g).
Option A
B
Upper C a upper O (s) plus upper H subscript 2 upper O (l) right arrow upper C a (upper O upper H) subscript 2 (a q).
Option B
C
Upper N a upper O upper H (a q) plus 2 upper H upper C l (a q) right arrow upper N a upper C l (a q) plus 2 upper H subscript 2 upper O (l).
Option C
D
Upper C a (upper O H) subscript 2 (s) plus 2 upper H upper C l (l) right arrow upper C a upper C l subscript 2 (a q) plus 2 upper H subscript 2 upper O (l).
Option D
49

What is the percent by mass of magnesium sulfate in MgSO4 · 7H2O?Use .

Question illustration
A
12.04%
B
48.83%
C
51.17%
D
86.98%
50

Given below is a list of chemical reactions.1. Burning octane fuel2. Forming rust in an iron pipe3. Baking a cake4. Cement hardeningWhich sequence ranks the chemical reactions in order from fastest to slowest?

A
4, 3, 2, 1
B
1, 3, 2, 4
C
3, 2, 1, 4
D
1, 3, 4, 2

Did you find these answers helpful?

More from this Course

Quiz
10 verified answers

Reaction Rate

Instruction
6 verified answers

Instruction

Assignment
4 verified answers

Warm-Up