Download 7th Chemistry Unit Test Study Guide Test Date: Friday, Nov. 16

7th Chemistry Unit Test Study Guide
Test Date: Friday, Nov. 16, 2016
NaCl and MgO are both examples of which type
of bond? How do you know?
The diagram represents which type of atomic
model? __________________________________.
H20, CH4, and CO2 are all examples of which type
Definition:
of bond? How do you know?
List the characteristics
List the characteristics
of a covalent bond.
of an ionic bond.
Choose any element and draw your
own:
The diagram represents which type of atomic
model? __________________________________.
Rusting statue, burning a match & mixing red bull
Definition:
& milk and baking pizza dough are all examples
of? ________________________
Melting snow and making a paper snowflake are
both examples of? _______________________
Choose any element and draw your
40. List 5 examples of 41. List 5 examples of
own:
a chemical change.
a physical change.
1.
1.
2.
2.
3.
3.
4.
4.
5.
5.
What is the difference between the two atomic
models in the questions above?
What is a precipitate?
What is an exothermic reaction?
What is an endothermic reaction?
dioxide (CO2). Which chemical equation
correctly describes this reaction?
How should the following equation be classified?
_______________________________.
Na2SO4 + CaCl2 --> NaCl +
CaSO4
Justify your answer:
A. H2O + CO2
B. CaCO3
CaCO3
CaO + CO2
C. CaO + CO
D. HCl + H2
CaCO3
ZnCl2
Is the formation of rust a synthesis or
How should the following equation be classified?
_______________________________.
CaCO3 --->CaO + CO2
decomposition reaction? Explain.
If Fe2O3 is the product, which of the following
chemical equations shows the reaction?
Justify your answer:
a. 4Fe + 3O2Fe2O3
b. 4Fe + CO2 Fe2O3
How should the following equation be classified?
c. 4Fe + 2H2O2Fe2O3
_______________________________.
Fe + H2O --> Fe3O4 + H2
Justify your answer:
Explain.
When investigating changes to a war memorial
statue, Tom the Turkey saw the statue had rusted.
The product of the reaction was Fe2O3. Is the
How should the following equation be classified?
_______________________________.
Na + Cl ---> NaCl
formation of rust a physical or chemical change?
Why?
What does the Law of Conservation of Mass state?
Justify your answer:
In the following equation, which substances
How should the following equation be classified?
_______________________________.
CaCO3 ---> CaO + CO2
are the products?_____________
CaCO3 ---> CaO + CO2
Define products:
Justify your answer:
In the following equation, which substances
The Pilgrims were researching chemical
reactions. They read that if you heat a small
amount of calcium carbonate (CaCO3), it will
produce calcium oxide (CaO) and carbon
are the reactants?______________
CaCO3 ---> CaO + CO2
Define reactants:
In a chemical equation, what number tells us how
many ATOMS of an element are in one molecule?
____________________________. Big number or little
number? (circle one)
In a chemical equation, which number tells us how
many MOLECULES are involved in a chemical
reaction? _______________________. Big number or
little number? (circle one)
_____________________ are the substances that you
end up with in a chemical reaction and are found
to the right of the arrow.
_____________________ are the substances that you
begin with in a chemical reaction and are found to
the left of the arrow.
What does the arrow mean in a chemical
reaction?
What mathematical function should take place
between subscripts and coefficients to properly
balance a chemical equation?