Download Unit 3 Review Packet

Name: ________________________
Pod: ____________________________
Date: ________________________
Unit 3: Chemistry – Matter and Elements
Unit 3 Review Packet
TEKs:

6.5A – know that an element is a pure substance represented by chemical symbols.

6.5B – recognize that a limited number of the many known elements comprise the largest portion of solid Earth, living matter,
oceans, and the atmosphere.

6.5C – differentiate between elements and compounds on the most basic level.

6.5D – identify the formation of a new substance by using the evidence of a possible chemical change such as the production
of gas, change in temperature, production of a precipitate, or color change.

6.6A – compare metals, nonmetals, and metalloids using physical properties such as luster, conductivity, or malleability.

6.6B – calculate density to identify an unknown substance.
The TEKs I am strong in are: ____________________________________________________________________________________
____________________________________________________________________________________________________________
____________________________________________________________________________________________________________
The TEKs I struggle with are: ____________________________________________________________________________________
____________________________________________________________________________________________________________
____________________________________________________________________________________________________________
My study plan for the unit 1 test is: ______________________________________________________________________________
____________________________________________________________________________________________________________
____________________________________________________________________________________________________________
UNIT 3 REVIEW:
Vocabulary Matching: Word bank is on the next page.
Match the term in the box to the correct definition.
1.
2.
3.
4.
5.
6.
7.
Elements are located on the ___________________
______________ _________ _______________________.
The smallest particle of an element that still has
the properties of that element is called an
________________________.
The ability to be shaped into thin wires is known
as ___________________________________.
These elements have both properties of metals
and non-metals; ______________________________________.
The amount of matter in a substance.
_______________________________
Element names are shortened into
______________________ ________________________________.
Compounds are written as ___________________________
___________________________________.
8.
9.
10.
11.
12.
13.
14.
The amount of matter in a given space.
_____________________________
These elements are shiny, malleable, ductile, and
not brittle - _______________________________.
The ability to be hammered into thin sheets is
known as _____________________________________.
The amount of space an object takes up.
__________________________________
A __________________________________ is when a solid is
formed from two liquids.
______________________________ are pure substances
that cannot be broken down into simple
substances.
These elements are on the right side of the black
zig-zag line on the Periodic Table __________________________________.
Name: ________________________
Pod: ____________________________
Date: ________________________
Word Bank:










Mass
Metalloids
Volume
Periodic Table of Elements
Chemical Symbols




Ductile
Density
Non-metals
Elements
Metals
Atoms
Malleability
Chemical Formula
Precipitate
6.5A: Elements and chemical symbols
Use the Periodic Table of Elements to identify the element name or chemical symbol of the following elements.
1.
________ Oxygen
6.
K _______________________
2.
________ Hydrogen
7.
Au ______________________
3.
________ Iron
8.
He ______________________
4.
________ Carbon
9.
B _______________________
5.
________ Neon
10. N _______________________
Open-Ended Response
Answer the questions below. Write in complete sentences.
1.
What are the three ways we can use to identify if a substance is an element?
__________________________________________________________________________________________________
__________________________________________________________________________________________________
__________________________________________________________________________________________________
__________________________________________________________________________________________________
6.5C: Elements vs. Compounds
Identification
Count and list the number of elements that make up the following compounds.
HO4CSiNe2
KCHe2O3Fe
NaClB
CS2FeO
H2SFeNO3K
Name: ________________________
Pod: ____________________________
Date: ________________________
Open-Ended Response
Answer the questions below. Write in complete sentences.
1.
What are the three ways we use to identify a substance is a compound?
__________________________________________________________________________________________________
__________________________________________________________________________________________________
__________________________________________________________________________________________________
__________________________________________________________________________________________________
2.
Explain two differences between elements and compounds.
__________________________________________________________________________________________________
__________________________________________________________________________________________________
__________________________________________________________________________________________________
__________________________________________________________________________________________________
__________________________________________________________________________________________________
6.5D: Formation of new substances
List the 5 pieces of evidence of a chemical change:
1.
2.
3.
4.
5.
Chemical or Physical?
Determine if the following is a physical change or a chemical change.
Description of change using properties
Physical or Chemical Change
(Circle one)
Kool-Aid dissolving in water (mixing in)
Physical Change Chemical Change
A rusting nail
Physical Change Chemical Change
The statue of Liberty changing color overtime
Burning paper changes its color, mass, volume, and
flammability
Physical Change Chemical Change
Water changing state of matter into ice.
Physical Change Chemical Change
Two liquids combining and forming a solid.
Physical Change Chemical Change
Physical Change Chemical Change
Name: ________________________
Pod: ____________________________
Date: ________________________
6.6A: Metals, Non-Metals, and Metalloids
Fill in the properties for metals, metalloids, and non-metals in the table below.
Metals
Metalloids
Non-Metals
6.6B: Density
Answer the questions below. Write in complete sentences.
1.
What is the formula for density?
2.
What units are used to label the mass?
5.
A sample of an unknown substance has a mass of
4.2g and a volume of 6 cm3. Calculate the density of
this substance.
6.
A cube measures 3 cm on each side. If the mass is
5.4 g, what is the cube’s density?
3.
What two units are used to label the volume?
4.
What two units are used to label the density?
7.
A toy dinosaur with a
mass of 4 g is placed
inside a graduated
cylinder with 4.8 mL of
water. What is the
density of the dinosaur?
Name: ________________________
Pod: ____________________________
Date: ________________________
Multiple Choice Practice
1.
Water (H2O) is not found on the Periodic Table of
Elements because water is
a. An atom
b. A liquid
c. A mixture
d. A compound
2.
What is a substance made of only one type of atom?
a. A compound
b. A solution
c. An element
d. A mixture
3.
Carbon dioxide is a gas that is found in the air you
breathe out. Carbon dioxide is made up of two
different pure substances, carbon and oxygen.
Which of the following would be classified as an
element?
a. Air
b. Gas
c. Oxygen
d. Carbon dioxide
During a science lab, you mixed two unknown
substances and observed bubbles. What can you
conclude about why the bubbles formed?
a. A chemical reaction produced a gas.
b. Only a physical change occurred.
c. The temperature of the substance changed.
d. No chemical reaction took place.
Which of the following observed properties is most
reliable in classifying a substance as a metal?
a. Brittle
b. Cannot be hammered into thin sheets.
c. Cannot be formed into a thin wire.
d. Good conductor of heat.
Which statement best describes most non-metals?
a. Most non-metals have a dull surface.
b. Most non-metals are poor conductors of
electricity.
c. Most non-metals can be shaped into a wire.
d. Most non-metals have a shiny surface.
An unknown substance has a volume of 3 mL and a
mass of 3.6 g. What is the density of this substance?
a. 0.3 g/mL
b. 1.2 g/mL
4.
5.
6.
7.
c.
d.
8.
3 g/mL
6 g/mL
Three liquids layered in a graduated cylinder are
shown with their densities. What conclusion can be
made about the physical properties of the liquids?
a.
9.
10.
Gasoline is more dense in comparison to
water.
b. Water is denser in comparison to Mercury.
c. Mercury is at the bottom because of its
buoyancy.
d. Mercury is the most dense of the three
liquids.
An unknown substance has a density of 1.2 g/cm3.
What is true for this substance?
a. This object will float in water.
b. This object will sink slightly in water.
c. This object is less dense than water.
A sample of an unknown substance has a mass of
28.8 g and a volume of 4 cm3. Based on its density, it
could be which of the following substances?
Metal
Density g/cm3
Gold
19.3
Iron
7.8
Lead
11.3
Tin
7.2
a.
b.
c.
d.
Gold
Iron
Lead
Tin