Which of the following best describes the role of a catalyst in a reaction? A) A catalyst
increases the activation energy required for a reaction to take place, B) a catalyst increases
the rate at which reactants become products, C) a catalyst shifts the reaction towards the
reactants, D) a catalyst increases the amount of product produced - ANSWER B)
Which of the following describes he effect of increasing the concentration of the reactants in
a reaction? A) the reaction rate will increase, B) the reaction rate will decrease, C) the
change in the reaction rate will depend on the temperature of the reaction, D) the change in
the reaction rate will depend on the pressure of the reaction - ANSWER A)
Which of the following substances is reduced in the reaction shown below? Fe2)3 + 3CO -
2Fe + 3CO2 A) Fe, B) O, C) CO, D) CO2 - ANSWER A)
Which of the following equations is a balanced equation? A) 2KCLO3 - KCL + 3O2, B) KCLO3 -
KCL + 3O2, C) 2KCLO3 - 2KCL + 3O3, D) 6KCLO3 - 6KCL + 3O2 - ANSWER C)
Which of the following types of reactions is shown below? Pb (NO3)2 + K2CrO4 - PbCrO4 +
2KNO3 A) combustion, B) decomposition, C) double displacement, D) single replacement -
ANSWER C)
Which of the following terms describes a solution in which more solvent can be dissolved?
A) unsaturated, B) saturated, C) supersaturated, D) homogenous - ANSWER A)
Which of the following best describes a substance with a pH of 12? A) very acidic, B) slightly
acidic, C) neutral, D) very basic - ANSWER D)
1
, In a carbonated soda, carbon dioxide is dissolved in water. Which of the following terms
describes the water in this mixture? A) common ion, B) solvent, C) solute, D) precipitant -
ANSWER B)
Which of the following acids is a strong acid? A) HCLO, B) HBr, C) HF, D) HN3 - ANSWER B)
Which of the following terms describes the phase change from liquid to solid? A)
evaporation, B) deposition, C) melting, D) freezing - ANSWER D)
Which of the following is likely to have the highest number of molecules? A) 1 liter of
gaseous CO2, B) 1 liter of liquid CO2, C) 1 liter of solid CO2, D) 1 liter of a mix of solid and
gaseous CO2 - ANSWER C)
Which of the following describes a physical change? A) water becomes ice, B) batter is baked
into a cake, C) a firecracker explodes, D) an acid is neutralized with a base - ANSWER A)
Which of the following bonds is the most polar? A) H-C, B) H-O, C) H-F, D) H-N - ANSWER
C)
Which of the following elements is most likely to form an ionic bond? A) argon, B) calcium,
C) copper, D) nitrogen - ANSWER B)
Which of the following lists the elements carbon, fluorine, oxygen, and nitrogen in order of
increasing electro negativity? A) C<N<O<F, B) F<N<O<C, C) F<O<N<C, D) C<N<F<O -
ANSWER A)
What is the charge of an atom with 5 protons and 7 electron? A) 12, B) -12, C) 2, D) -2 -
ANSWER D)
Which of the following elements is an alkali metal? A) sodium, B) oxygen, C) neon, D) iron -
ANSWER A)
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increases the activation energy required for a reaction to take place, B) a catalyst increases
the rate at which reactants become products, C) a catalyst shifts the reaction towards the
reactants, D) a catalyst increases the amount of product produced - ANSWER B)
Which of the following describes he effect of increasing the concentration of the reactants in
a reaction? A) the reaction rate will increase, B) the reaction rate will decrease, C) the
change in the reaction rate will depend on the temperature of the reaction, D) the change in
the reaction rate will depend on the pressure of the reaction - ANSWER A)
Which of the following substances is reduced in the reaction shown below? Fe2)3 + 3CO -
2Fe + 3CO2 A) Fe, B) O, C) CO, D) CO2 - ANSWER A)
Which of the following equations is a balanced equation? A) 2KCLO3 - KCL + 3O2, B) KCLO3 -
KCL + 3O2, C) 2KCLO3 - 2KCL + 3O3, D) 6KCLO3 - 6KCL + 3O2 - ANSWER C)
Which of the following types of reactions is shown below? Pb (NO3)2 + K2CrO4 - PbCrO4 +
2KNO3 A) combustion, B) decomposition, C) double displacement, D) single replacement -
ANSWER C)
Which of the following terms describes a solution in which more solvent can be dissolved?
A) unsaturated, B) saturated, C) supersaturated, D) homogenous - ANSWER A)
Which of the following best describes a substance with a pH of 12? A) very acidic, B) slightly
acidic, C) neutral, D) very basic - ANSWER D)
1
, In a carbonated soda, carbon dioxide is dissolved in water. Which of the following terms
describes the water in this mixture? A) common ion, B) solvent, C) solute, D) precipitant -
ANSWER B)
Which of the following acids is a strong acid? A) HCLO, B) HBr, C) HF, D) HN3 - ANSWER B)
Which of the following terms describes the phase change from liquid to solid? A)
evaporation, B) deposition, C) melting, D) freezing - ANSWER D)
Which of the following is likely to have the highest number of molecules? A) 1 liter of
gaseous CO2, B) 1 liter of liquid CO2, C) 1 liter of solid CO2, D) 1 liter of a mix of solid and
gaseous CO2 - ANSWER C)
Which of the following describes a physical change? A) water becomes ice, B) batter is baked
into a cake, C) a firecracker explodes, D) an acid is neutralized with a base - ANSWER A)
Which of the following bonds is the most polar? A) H-C, B) H-O, C) H-F, D) H-N - ANSWER
C)
Which of the following elements is most likely to form an ionic bond? A) argon, B) calcium,
C) copper, D) nitrogen - ANSWER B)
Which of the following lists the elements carbon, fluorine, oxygen, and nitrogen in order of
increasing electro negativity? A) C<N<O<F, B) F<N<O<C, C) F<O<N<C, D) C<N<F<O -
ANSWER A)
What is the charge of an atom with 5 protons and 7 electron? A) 12, B) -12, C) 2, D) -2 -
ANSWER D)
Which of the following elements is an alkali metal? A) sodium, B) oxygen, C) neon, D) iron -
ANSWER A)
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