Ch 12

Question 1

The branch of science that applies to substances that contain carbon is called _____ chemistry.

a. inorganic
b. organic
c. environmental
d. structural

Answer 1

b. organic

Question 2

All haircolor products are organic chemicals, which means they _____.

a. are natural and healthy
b. contain non-synthetic ingredients
c. contain carbon and hydrogen
d. lack carbon but may contain hydrogen

Answer 2

c. contain carbon and hydrogen

Question 3

What is the study of substances that lack the element carbon, but may contain the element hydrogen?

a. Inorganic chemistry
b. Physical chemistry
c. Stereochemistry
d. Biochemistry

Answer 3

a. Inorganic chemistry

Question 4

A characteristic of all inorganic substances is that they _____.

a. burn easily
b. contain hydrogen
c. are derived from living things
d. lack carbon

Answer 4

d. lack carbon

Question 5

The simplest form of chemical matter that cannot be broken down without the loss of identity is a(n) _____.

a. element
b. energy
c. substance
d. mineral

Answer 5

a. element

Question 6

There are _____ naturally occurring elements, each with its own distinct physical and chemical properties.

a. 68
b. 98
c. 118
d. 138

Answer 6

b. 98

Question 7

Sodium chloride is an example of a(n) _____.

a. compound molecule
b. atom
c. element
d. mineral

Answer 7

a. compound molecule

Question 8

What type of chemical reaction results in the oxidizing agent being reduced and the reducing agent
being oxidized? 
a.  Decomposition 
b.  Simple displacement 
c.  Neutralization 
d.  Redox

Answer 8

d. Redox

Question 9

A chemical combination of matter in definite (fixed) proportions is a _____.

a. physical mixture
b. physical blend
c. pure substance
d. pure combination

Answer 9

c. pure substance

Question 10

Air contains many substances, including nitrogen, carbon dioxide, and water vapor, and is an example of a _____.

a. physical mixture
b. chemical change
c. pure substance
d. chemical compound

Answer 10

a. physical mixture

Question 11

Mutually soluble liquids that can be mixed together to form clear solutions are _____.

a. fusible
b. miscible
c. solvents
d. compatible

Answer 11

b. miscible

Question 12

Being “capable of combining with or attracting water (water-loving)” is defined as _____.

a. lipophilic
b. halophilic
c. hydrophilic
d. acidophilic

Answer 12

c. hydrophilic

Question 13

An atom or molecule that carries an electrical charge is a(n) _____.

a. electrolyte
b. ion
c. current
d. conductor

Answer 13

b. ion