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Periodic Table And Chemical Reactions
Test Description: Review for the periodic table and chemical reactions.
Instructions: Answer all questions to get your test result.
1) A chemical reaction occurs when silver nitrate is added to salt water. Which most likely causes a faster reaction rate?
A
increasing the volume of salt water
B
decreasing the temperature of the silver nitrate
C
decreasing the volume of silver nitrate
D
increasing the temperature of the salt water
2) What happens when chemical bonds break and new bonds form?
A
matter is destroyed
B
surface area increases
C
a chemical change
D
a physical change
3) When sulfur is burned int he presence of oxygen, sulfur dioxide is produced. Why are the properties of sulfur dioxide different than the properties of sulfur an oxygen?
A
sulfur dioxide is a compound
B
sulfur dioxide is a mixture
C
sulfur dioxide contains two metals
D
sulfur dioxide contains two nonmetals
4) The only sure evidence for a chemical reaction is
A
the formation of a gas
B
a new substance is formed
C
a color change
D
changes in properties
5) According to the periodic table, which element could be used in a circuit as the best electrical conductor?
A
Argon (Ar)
B
Iridium (Ir)
C
Arsenic (As)
D
Selenium (Se)
6) The substances listed on the right side of a chemical equation are the
A
precipitates
B
coefficients
C
reactans
D
products
7) A chemical reaction that absorbs energy in the form of heat is described as
A
endothermic
B
activation energy
C
exothermic
D
unbalanced
8) When we exploded the hydrogen balloon, a lit match was required for the chemical reaction to start. What term describes the lit match?
A
chemical energy
B
endothermic energy
C
activation energy
D
exothermic energy
9) Which of the following does NOT increase the rate of reaction?
A
adding a catalyst
B
increasing the temperature
C
increasing the surface area
D
adding an inhibitator
10) A student calculated the density of 100 mL of water to be 1.02 g/mL. He then poured out half of the water and found the density of 50 mL. of water. Which below would most likely be the density of half of the water?
A
0.51 g/mL
B
1.02 g/mL
C
2.04 g/mL
D
1.52 g/mL
11) A student has 2 unknown substances. Substance 1 is shiny, is a good conductor and is malleable. Substance 2 is dull, is a good insulator and is brittle. Which one is a metal and which is a nonmetal?
A
They are both metals.
B
Substance 1 is a nonmetal while substance 2 is a metal.
C
Substance 1 is a metal while substance 2 is a nonmetal.
D
They are both nonmetals.
12) According to the periodic table, which element has properties most similar to sulfur (S)?
A
Phosphorus (P)
B
Sodium (Na)
C
Polonium (Po)
D
Bromine (Br)
13) The dome on Georgia's state capital building is gilded (covered in gold). Why does it take only 1.2 kilograms of gold to gild the entire dome?
A
Gold is very malleable.
B
Gold is a good insulator.
C
Gold is very ductile.
D
Gold is a good conductor.
14) Why do atoms combine?
A
to gain neutrons
B
to fill outer energy shells
C
to make new elements
D
to form mixtures
15) Every chemical reaction involves a change in
A
energy
B
mass
C
state
D
concentration
16) Mendeleev created the first periodic table by arranging elements in order of
A
increasing atomic mass
B
decreasing atomic number
C
decreasing atomic mass
D
increasing atomic number
17) From an element's location on the periodic table, you can predict
A
when it was discovered
B
its chemical symbol
C
its chemical name
D
its properties
18) In the periodic table, the most reactive metals are found
A
In group 1, the first column on the left
B
In groups 13 through 16 in the center
C
In periods 6 and 7 at the bottom
D
In period 1, the first row across the top
19) A material is said to be ductile if it
A
can be hammered or rolled into flat sheets or other shapes.
B
can transfer heat and electricity to another material
C
is a mixture of a metal with at least one other element.
D
can be pulled out, or drawn, into a long wire.
20) Most metals are not
A
good conductors of heat and electricity
B
malleable
C
ductile
D
liquid at room temperature
*select an answer for all questions
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