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Terms in this set (48)
Which observation does NOT indicate that a chemical reaction has occurred?
change in total mass of substances
The reaction represented by the equation 2KClO3(s) -> 2KCl(s) + 3O2(g) is a(n)
In the word equation, sodium oxide + water -> sodium hydroxide, the formula for
sodium hydroxide is represented by
An element in the activity series can replace any element
below it on the list
Magnesium bromide (aq) + chlorine (g) yields
MgCl2(aq) and Br2(l).
In an equation, the symbol for a substance in water solution is followed by
In writing a chemical equation that produces hydrogen gas, the correct representation of hydrogen gas is
In the chemical equation 2Mg(s)+ O2(g) -> 2MgO(s), Mg represents
the reactant magnesium
When a solid produced by a chemical reaction separates from the solution it is called
Which reactant controls the amount of product formed in a chemical reaction?
When water is warmed from its freezing temperature to the temperature of max density, it
A solid forms when the average energy of a substance's particles
The triple point of a substance is the temperature and pressure conditions at which
states of a substance coexist at equilibrium
Which is an example of effusion?
air slowly escaping from a pinhole in a tire
Which term best describes the process by which particles escape from the surface of a non boiling liquid and enter the gas state?
What determines the average kinetic energy of the molecules of any gas?
Compared with a crystalline solid, the particles in an amorphous solid
occur in a random pattern
The particles in both liquids and gases
can change positions with other particles
At pressures greater than 1 atm, water will boil at
a temperature higher than 100°C
According to the kinetic molecular theory, particles of an ideal gas
neither attract or repel each other but collide
How many moles of ions are produced by the dissociation of 1 mol of Al2(CO3)3?
Energy is measured in units of
What is the energy required to raise the temperature of 1g of a substance by 1C or 1K
The equation AX + BY -> AY + BX is the general equation for a
The intermolecular forces between particles in a liquid can involve all of the following except
Which process can be explained by the kinetic-molecular theory?
As atmospheric pressure on the surface of a liquid decreases, its boiling point
Precipitation is an example of what type of reaction
The enthalpy of formation of an element is
What is the formula for zinc fluoride?
Name the compound Fe(no3)2
What is the formula for hydrochloric acid?
What is the oxidation number of hydrogen in H2O?
What is the sum of atomic masses of all atoms in a formula unit of any compound?
Active metals react with certain acids, such as hydrochloric acid, to yield a metal compound and
The coefficients in a chemical equation represent the
relative numbers of moles of reactants and products
According to the kinetic molecular theory, gases condense into liquids because of
forces between molecules
According to the kinetic-molecular theory, particles of matter are in motion in
solids, liquids, gases
Unlike in an ideal gas, in a real gas
the particles exert attractive forces on each other
By which process do gases take the shape of their container?
Under which conditions do real gases most resemble ideal gases?
low pressure and high temperature
The compressibility of a liquid is generally
less than that of a gas
Which of the following properties do solids share with liquids?
If the rate of evaporation from the surface of a liquid exceeds the rate of condensation
concentration of the vapor is increasing
A volatile liquid
According to the kinetic-molecular theory, particles of matter are
in constant motion
In the equation 2KClO3 => 2KCl + 3O2, how many moles of oxygen are produced when 3.0 mol of KClO3 decompose completely?
When the equation Fe3O4 + Al--> Al2O3+Fe is correctly balanced, what is the coefficient of Fe?
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