Chemistry Part 1 Practice for retakes
LT.C.1- On separate paper.
LT.C.2 I can classify a substance as an element or compound.
1) Identify each of the following as an element or a compound:
a) Ca b) Mn c) MgBr d) SrF2 e) Fr f) NiO
LT.C.3 I can compare physical and chemical properties.
1) List the physical properties of matter that we discussed in class.
2) List the chemical properties of matter that we discussed in class.
3) Describe how a chemical property is different than a physical property.
LT.C.4 I can explain density as a physical property.
1) If the density of a large chunk of solid metal is 5.4g/mL and we break the metal into two pieces,
one large piece and one smaller piece. What would be the density of the larger piece? What
would be the density of the smaller piece? Explain your answers.
LT.C.5 I can explain how density can be used.
1) Object A has a density of 4.2 g/mL and Object B has a density of 0.8 g/mL. Which object would
make the best raft material? Explain your answer.
LT.C.6 I can organize elements and compounds based on their properties.
1) Here are six elements. Organize them into two groups based on their properties. Explain how you
separated the groups.
Element
Density (g/mL)
React to O2
Conductivity
Malleable
Element A
Element B
Element C
Element D
Element E
Element F
1.23
1.45
7.32
7.1
2.2
2.6
Yes
No
No
No
Yes
No
Yes
No
No
No
Yes
No
Yes
No
Yes
No
No
Yes
State of matter
under normal
conditions
Solid
Gas
Liquid
Gas
Solid
Solid
LT.C.7 I can infer real life applications for a substance based on properties.
1) Determine whether substance A or substance B is better for an outdoor statue in an area with high
amounts of acid rain. Substance A= a type of stone, hard, very dense (>5 g/mL), reacts and dissolves in
acid. Substance B= a type of stone, hard, fairly dense (>3g/mL), does not react with acid.
2) Infer a real life application for a material with the following properties: Shiny, very conductive of both
heat and electricity, very malleable, very ductile, non-reactive, non-flammable, density= 3.74g/mL.
LT.C.8 I can explain solids, liquids, and gases at the molecular level.
1) Draw a solid, liquid, and gas at the molecular level. Include a description of each state of matter
under each drawing. Make sure to include, characteristics of each, how tightly packed each is,
energy level of each, and movement of each.
2) Draw and label the flow chart of all phase changes.
LT.C.9 I can explain how all matter is composed of different combinations/amounts of 92 naturally
occurring elements.
1) Explain how it is possible for all matter on Earth to be composed from only 92 elements.
LT.C.10 I can read the periodic table.
1 ) How many protons, neutrons, and electrons are in the following elements:
A )He
b) Li
c) Fe
d) N
e) Ca
f) Br
g) Au
LT.C.11 I can use patterns of reactivity to determine real life applications for elements and
compounds.
1) Below is a table of a fictional element family. Fill in all blanks on the table by predicting based
on trends that are in the family. Remember that trends occur from top to bottom in element
families. Given the fictional periodic table family below, predict a real life application for
element X.
a) electric wiring
element
T
Density
(g/mL)
1.2
U
1.9
V
2.5
W
3.4
X
b) used in matches
c) raft material
color
conductivity
React to fire
Very light
brown/dull
Light
brown/semidull
Very high
Yes
low
Darker
brown/shiny
Very low
d) insulated cup
React to
water
Yes
malleability
Only after
long exposure
Yes
Yes
No
Only after
long exposure
No
Yes
Yes
Yes
Yes