put host here chapter 1 vocabulary chapter 1 key points
TRANSCRIPT
put host hereput host here
Chapter 1 Vocabulary
Chapter 1 Key Points
Chapter 2 Vocabulary
Chapter 2 Key Points
Chapter 4
Calculations
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What is matter?
Anything that has mass and
occupies space
What is the study of the composition of matter?
Chemistry
Which branch of chemistry deals with the rate when matter undergoes a change?
Physical chemistry
What is research that is directed
toward a practical goal or
application?
Applied Chemistry
What is a well-tested explanation
for a set of observations?
Theory
How is chemistry
useful?
Explains the natural world, prepares people
for career opportunities, and produces informed
citizens
What are the steps in the
scientific method?
Making observations,
testing hypotheses, and developing
theories
How do chemists study the universe?
They gather data and analyze
matter brought back to Earth
Who helped transform chemistry
to the science of measurement that it
is today?
Lavoisier
What are the five traditional areas
of study in chemistry?
Organic, inorganic,
biochemistry, analytical, and
physical
What is the measure of the
amount of matter an object contains?
Mass
The property that depends on the type of
matter
Intensive
What can be observed without
changing the substance’s
composition?
Physical property
What can be compressed?
Gas
What is a phase?
Any part of a sample with
uniform composition and
properties
What are the three states of
matter?
Solid, liquid, and gas
What are the two types of
physical changes?
Reversible and
irreversible
Extensive or intensive? Plastic vs
paper bags
Intensive
What has to happen in a
chemical change?
The composition
has to change
What are four possible clues to a chemical
change?
Transfer of energy, colour change, production of a
gas, or a precipitate
Who believed atoms were
indivisible and indestructible?
Democritus
What are the three types of
subatomic particles?
Electrons, protons, and
neutrons
What two subatomic
particles have almost the same
weight?
Protons and neutrons
What does the atomic
number refer to?
The number of protons
What makes up most of the volume of an
atom?
The electrons
How many protons, neutrons, and
electrons are there in fluorine-19?
9, 10, 9
How many protons, neutrons, and electrons are
there in Manganese-55?
25, 30, 25
Argon has three isotopes with mass number 36, 38, and
40. Which isotope is the most abundant?
Argon-40
Chlorine-35 (34.97amu, 75.77%)
Chlorine-37 (36.97amu, 24.23%)
Find atomic mass
35.45amu
78.92amu (50.69%) and 80.92amu (49.31%) Find atomic mass of
bromine
79.91amu
Law of Conservation
of Mass
Oxygen and hydrogen react to form water.
6g of hydrogen produced 54g of water.
How much oxygen was used?
48g