Chapter 1 - Intro to Chem
According to ancient Chinese beliefs, what two forces were responsible for bringing the earthly world
into existence? - ✔✔ correct answer yin and yang
According to the Greek philosopher Thales in 600 B.C., what single element composed Earth, air, and
space? - ✔✔ correct answer water
According to the Greek philosopher Empedocles in 450 B.C., what four basic elements composed
everything in nature? - ✔✔ correct answer water, air, earth, fire
According to the Greek philosopher Aristotle in 350 B.C., what five basic elements composed
everything in nature? - ✔✔ correct answer air, ether, water, fire, earth
What is the first step in the scientific method? - ✔✔ correct answer to plan and perform an
experiment, then make observations and record data
What is the second step in the scientific method? - ✔✔ correct answer to analyze the data, and
propose a tentative hypothesis to explain the experimental observations.
What is the third step in the scientific method? - ✔✔ correct answer to conduct additional
experiments in order to test the hypothesis
Who is considered the founder of the scientific method? - ✔✔ correct answer Robert Boyle
What is the difference between a scientific theory and a natural law? - ✔✔ correct answer theory
explains the behavior of nature using a model or concept; whereas, a natural law states a
relationship that is measurable under various experimental conditions
What is the difference between a hypothesis and a theory? - ✔✔ correct answer a hypothesis is an
initial proposal that is tentative, whereas a theory is a proposal that has been tested extensively
The total mass of reacting substances remains constant after reaction. - ✔✔ correct answer natural
law
The total energy of two gas molecules remains constant after colliding. - ✔✔ correct answer
scientific theory
, Chapter 1 - Intro to Chem
The volumes of two gases combine in the ratio of small whole numbers. - ✔✔ correct answer natural
law
The nucleus of an atom contains protons and neutrons. - ✔✔ correct answer scientific theory
If the temperature of a gas doubles, the volume doubles. - ✔✔ correct answer natural law
The universe is expanding all the time. - ✔✔ correct answer scientific theory
When we drop an ice cube into water the transfer of heat is due to changes in the motion of
molecules in the ice and water. - ✔✔ correct answer scientific theory
The region surrounding the nucleus has negative charges. - ✔✔ correct answer scientific theory
Why is chemistry referred to as the central science? - ✔✔ correct answer because it stands at the
crossroads of biology, physics, geology, and medicine
Who first published the periodic table? - ✔✔ correct answer Dmitri Mendeleev
Select all professions that require a training in chemistry. - ✔✔ correct answer Physical therapy,
chiropractor, nurses, doctors, dentists
It is possible to solve the nine-dot problem with one straight, continuous line. - ✔✔ correct answer
The one straight, continuous line that would solve the nine-dot problem must be wide enough to
encompass all of the points at once. The unconscious assumption made in this problem is that the
thickness of the line cannot be varied.
Select all the industries in which chemistry plays an important role - ✔✔ correct answer power
industry, iron and steel industry, petrochemical industry, construction industry, food industry
Which of the line segments in the image below appears to be longer, AB or BC? <-------->---------< -
✔✔ correct answer The line segments AB and BC are of equal length
According to ancient Chinese beliefs, what two forces were responsible for bringing the earthly world
into existence? - ✔✔ correct answer yin and yang
According to the Greek philosopher Thales in 600 B.C., what single element composed Earth, air, and
space? - ✔✔ correct answer water
According to the Greek philosopher Empedocles in 450 B.C., what four basic elements composed
everything in nature? - ✔✔ correct answer water, air, earth, fire
According to the Greek philosopher Aristotle in 350 B.C., what five basic elements composed
everything in nature? - ✔✔ correct answer air, ether, water, fire, earth
What is the first step in the scientific method? - ✔✔ correct answer to plan and perform an
experiment, then make observations and record data
What is the second step in the scientific method? - ✔✔ correct answer to analyze the data, and
propose a tentative hypothesis to explain the experimental observations.
What is the third step in the scientific method? - ✔✔ correct answer to conduct additional
experiments in order to test the hypothesis
Who is considered the founder of the scientific method? - ✔✔ correct answer Robert Boyle
What is the difference between a scientific theory and a natural law? - ✔✔ correct answer theory
explains the behavior of nature using a model or concept; whereas, a natural law states a
relationship that is measurable under various experimental conditions
What is the difference between a hypothesis and a theory? - ✔✔ correct answer a hypothesis is an
initial proposal that is tentative, whereas a theory is a proposal that has been tested extensively
The total mass of reacting substances remains constant after reaction. - ✔✔ correct answer natural
law
The total energy of two gas molecules remains constant after colliding. - ✔✔ correct answer
scientific theory
, Chapter 1 - Intro to Chem
The volumes of two gases combine in the ratio of small whole numbers. - ✔✔ correct answer natural
law
The nucleus of an atom contains protons and neutrons. - ✔✔ correct answer scientific theory
If the temperature of a gas doubles, the volume doubles. - ✔✔ correct answer natural law
The universe is expanding all the time. - ✔✔ correct answer scientific theory
When we drop an ice cube into water the transfer of heat is due to changes in the motion of
molecules in the ice and water. - ✔✔ correct answer scientific theory
The region surrounding the nucleus has negative charges. - ✔✔ correct answer scientific theory
Why is chemistry referred to as the central science? - ✔✔ correct answer because it stands at the
crossroads of biology, physics, geology, and medicine
Who first published the periodic table? - ✔✔ correct answer Dmitri Mendeleev
Select all professions that require a training in chemistry. - ✔✔ correct answer Physical therapy,
chiropractor, nurses, doctors, dentists
It is possible to solve the nine-dot problem with one straight, continuous line. - ✔✔ correct answer
The one straight, continuous line that would solve the nine-dot problem must be wide enough to
encompass all of the points at once. The unconscious assumption made in this problem is that the
thickness of the line cannot be varied.
Select all the industries in which chemistry plays an important role - ✔✔ correct answer power
industry, iron and steel industry, petrochemical industry, construction industry, food industry
Which of the line segments in the image below appears to be longer, AB or BC? <-------->---------< -
✔✔ correct answer The line segments AB and BC are of equal length
