1
MILADY CH 6 EXAM CHEMISTRY AND
CHEMICAL SAFETY QUESTIONS WITH
SOLUTIONS
Which of the following is defined as anything that occupies space (volume) and
has mass (weight)? - correct-answer - matter
The are 118 different elements known to science today. How many of these are
naturally occurring on Earth? - correct-answer - 98
Which of the following are the basic building blocks of all matter? - correct-
answer - atoms
H is the symbol for which element? - correct-answer - hydrogen
An example of an elemental molecule is ___________. - correct-answer -
atmospheric oxygen
As the basic unit of matter, __________ cannot be divided into simpler
substances by ordinary chemical means. - correct-answer - atoms
, 2
Rusting iron and burning wood are examples of a change in what type of
properties? - correct-answer - chemical
An example of a physical change is __________. - correct-answer - ice melting to
water
An example of a chemical change is __________. - correct-answer - the oxidation
of haircolor products
Which of the following is an example of a pure substance? - correct-answer - salt
What does a pH below 7 indicate? - correct-answer - an acidic solution
The letters pH denote __________, which is the relative degree of acidity or
alkalinity of a substance. - correct-answer - potential hydrogen
Solutions that do not contain water, such as alcohol or oil, do not have
___________. - correct-answer - pH
What is the average pH for hair and skin? - correct-answer - 5
MILADY CH 6 EXAM CHEMISTRY AND
CHEMICAL SAFETY QUESTIONS WITH
SOLUTIONS
Which of the following is defined as anything that occupies space (volume) and
has mass (weight)? - correct-answer - matter
The are 118 different elements known to science today. How many of these are
naturally occurring on Earth? - correct-answer - 98
Which of the following are the basic building blocks of all matter? - correct-
answer - atoms
H is the symbol for which element? - correct-answer - hydrogen
An example of an elemental molecule is ___________. - correct-answer -
atmospheric oxygen
As the basic unit of matter, __________ cannot be divided into simpler
substances by ordinary chemical means. - correct-answer - atoms
, 2
Rusting iron and burning wood are examples of a change in what type of
properties? - correct-answer - chemical
An example of a physical change is __________. - correct-answer - ice melting to
water
An example of a chemical change is __________. - correct-answer - the oxidation
of haircolor products
Which of the following is an example of a pure substance? - correct-answer - salt
What does a pH below 7 indicate? - correct-answer - an acidic solution
The letters pH denote __________, which is the relative degree of acidity or
alkalinity of a substance. - correct-answer - potential hydrogen
Solutions that do not contain water, such as alcohol or oil, do not have
___________. - correct-answer - pH
What is the average pH for hair and skin? - correct-answer - 5
