Periodic Table And Chemical Reactions Question Preview (ID: 41997)
Review For The Periodic Table And Chemical Reactions.
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According to the periodic table, which element has properties most similar to sulfur (S)?
a) Phosphorus (P)
b) Sodium (Na)
c) Bromine (Br)
d) Polonium (Po)
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) They are both nonmetals.
c) Substance 1 is a metal while substance 2 is a nonmetal.
d) Substance 1 is a nonmetal while substance 2 is a metal.
Which of the following does NOT increase the rate of reaction?
a) increasing the temperature
b) increasing the surface area
c) adding a catalyst
d) adding an inhibitator
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) 1.52 g/mL
c) 2.04 g/mL
d) 1.02 g/mL
According to the periodic table, which element could be used in a circuit as the best electrical conductor?
a) Selenium (Se)
b) Argon (Ar)
c) Iridium (Ir)
d) Arsenic (As)
The substances listed on the right side of a chemical equation are the
a) products
b) coefficients
c) precipitates
d) reactans
A chemical reaction that absorbs energy in the form of heat is described as
a) activation energy
b) exothermic
c) unbalanced
d) endothermic
When we exploded the hydrogen balloon, a lit match was required for the chemical reaction to start. What term describes the lit match?
a) activation energy
b) exothermic energy
c) endothermic energy
d) chemical energy
The only sure evidence for a chemical reaction is
a) the formation of a gas
b) a color change
c) changes in properties
d) a new substance is formed
What happens when chemical bonds break and new bonds form?
a) a physical change
b) matter is destroyed
c) surface area increases
d) a chemical change
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 mixture
b) sulfur dioxide is a compound
c) sulfur dioxide contains two metals
d) sulfur dioxide contains two nonmetals
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 volume of silver nitrate
c) increasing the temperature of the salt water
d) decreasing the temperature of the silver nitrate
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 conductor.
c) Gold is a good insulator.
d) Gold is very ductile.
Why do atoms combine?
a) to gain neutrons
b) to form mixtures
c) to fill outer energy shells
d) to make new elements
Every chemical reaction involves a change in
a) mass
b) energy
c) concentration
d) state
Mendeleev created the first periodic table by arranging elements in order of
a) decreasing atomic mass
b) decreasing atomic number
c) increasing atomic number
d) increasing atomic mass
From an element's location on the periodic table, you can predict
a) its properties
b) its chemical name
c) its chemical symbol
d) when it was discovered
In the periodic table, the most reactive metals are found
a) In groups 13 through 16 in the center
b) In group 1, the first column on the left
c) In period 1, the first row across the top
d) In periods 6 and 7 at the bottom
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.
Most metals are not
a) ductile
b) good conductors of heat and electricity
c) liquid at room temperature
d) malleable
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