From the lab of:_____________________________________________________________#__________
Conceptual Chemistry Study Guide
Unit One: Water
Essential Questions:
 What are the chemical and physical properties of water?
 How are pollutants affecting our water supply?
Upon completion of this unit, you should be able to:
 Define/identify the following terms:
Matter
Scientific Method
Manipulated Variable
Theory
Mass
Volume
Substance
Physical Property
Physical Change
Element
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Chemistry
Hypothesis
Responding Variable
Law
Chemical Property
Compound
Density
Chemical Reaction
Mixture
List/ describe the two kinds of observations
Explain how a controlled experiment is designed
Compare a theory to a law
List the basic units used in chemistry
List the metric units of length
List the units of volume
Determine the volume of solids, liquids and gases
List the units of mass
List the units of temperature
Calculate density
List some examples of physical properties
List and compare the three states of matter
List some examples of physical and chemical changes
What are the two kinds of mixtures
Explain how mixtures can be separated
Explain how elements, compounds and mixtures compare
List the signs of a chemical reaction
Matter-
Chemistry-
 What are the two kinds of observations?
1. _______________________ describe an object’s characteristics, properties or attributes.
Examples would include: ____________________, ____________________ or
____________________.
2. ______________________involve a quantity or an amount. Examples would include
____________________, __________________ or __________________.
Scientific Method-
Hypothesis-
Manipulated Variable-
Responding Variable-
 How is a controlled experiment designed?
A controlled experiment should have a ____________, a standard for comparison. Controlled
experiments only change ________variable at a time. The one variable that changes in a
controlled experiment is called a _______________ _________________. The thing that is
affected by changing the _______________ _____________ is called the _______________
______________________. All of the things that stay the same in an experiment are called
______________________.
Theory-
Scientific Law-
 How does a theory differ from a law?
Theory
Law
 What are the base units used in chemistry?
Length is measured in ____________.
Mass is measured in ________________. We will use ___________. There are ________grams
in one kilogram.
Temperature is measured in _____________. We will use _________.
Time is measured in _____________.
We will also talk about something called a _________!
 What are the metric units of length?
The common metric units for length are the ________________, the _________________ and
the ______________________. Remember there are _________millimeters in a centimeter.
__________________centimeters in a _____________ and _______________ in a kilometer.
Mass-
 What are the units for mass?
The units of a mass are ________________ when we record the mass of an object, we will use a
___________.
How do you determine the mass of a quantity of water?
Volume-
 What are the units for volume?
Volume can be recorded as _____________ or _____________
1 cm3 = ____________
How do you determine the volume of a quantity of water? Ice? a gas?
 What are the units for temperature?
The units for temperature are _______________, ________________ and _________________.
Scientists usually describe temperature using _______________ or _______________.
Your weather man uses ______________ to report the temperature.
What are the boiling points and melting points of water on various temperature scales?
Density-
 How is density determined?
Density can be determined by dividing the ____________ of an object by its
_______________ (How much stuff fits into the space?).
Density can be recorded as ___________ or _____________.
Sample Problem:
What is the density of water?
Substance-
Physical Property-
Chemical Property-
 What are some examples of physical properties?
Physical properties can be observed without changing the ___________ of the
substance. Examples include: ____________________, __________________,
or _________________.
What are some physical properties of water?
 What are the three states of matter and how do they compare?
How do the three states of water compare?
Physical Change-
 What are some examples of physical and chemical changes?
Physical changes can be ______________, When a substance undergoes a ____________
______________ its identity does not change. Examples of a physical change
include_______________________, __________________ and ____________________.
Chemical changes _____________ be reversed. When a substance undergoes a ____________
_________________ its identity does change. Examples of a chemical change include:
_________________, ________________ and ___________________.
What are some physical changes water can undergo?
Mixture-
 What are the two kinds of mixtures?
 How can mixtures be separated?
Differences in ____________ ______________ can be used to separate mixtures.
Solids can be separated from liquids through ________________. This involves pouring the
mixture into a _______________ lined with ____________ ____________. The __________
stay in the funnel, but the ______________drip down through the paper into a container.
______________ that are mixed together can be separated by using a technique called
____________________. This process works as long as the liquids have different
___________________ __________________. The liquids are boiled and then allowed to
___________________.
The ________________ ______________ is another way to separate substances. You can use
your ______________ or _____________ to “pick out” one substance from another.
How can water be separated from other substances?
Solute-
Solvent-
 How does a solution compare to a mixture?
A solution is a _________________ __________________. The composition is
____________________ throughout. Some solutions consist of a ___________ or
_________________ dissolved in a _______________ or ______________.
How does water “act” as a solvent?
Element-
What elements can be found in water?
What is the role of water as a conductor?
Compound-
Why is water a compound?
 How do elements, compounds and mixtures compare?
Chemical Reaction-
 What are the signs that a chemical change has occurred?
Remember that during a ____________ ___________ the composition of the matter always
changes!
The signs that a chemical change has occurred are: ______________, ____________,
___________ and ____________.
During a ______________ ________________ the mass of the ______________ always equals
the mass of the __________________. This is called _________ _________ ______
_____________________ ______ __________________.
Where does our drinking water come from and why should we conserve it?