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Test Bank For Chemistry An Atoms First Approach, 3rd Edition Steven S. Zumdahl (Author), Susan A. Zumdahl (Author), Donald J. DeCoste (Author) ALL CHAPTERS COVERED$15.99
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Test Bank For Chemistry An Atoms First Approach, 3rd Edition Steven S. Zumdahl (Author), Susan A. Zumdahl (Author), Donald J. DeCoste (Author) ALL CHAPTERS COVERED
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Test Bank For Chemistry An Atoms First Approach, 3rd Edition Steven S. Zumdahl (Author), Susan A. Zumdahl (Author), Donald J. DeCoste (Author) ALL CHAPTERS COVERED
· Which of the following particles has a positive charge?
· A) Electron
B) Neutron
C) Proton
D) Photon
Answer: C) Proton
· What is the main idea behind the atomic theory proposed by Dalton?
· A) Atoms are indivisible and indestructible.
B) Atoms can change into different elements.
, C) Atoms are composed of smaller subatomic particles.
D) Atoms have a uniform density.
Answer: A) Atoms are indivisible and indestructible.
· In the periodic table, elements are arranged by increasing:
· A) Mass number
B) Atomic mass
C) Atomic number
D) Valence electrons
Answer: C) Atomic number
· Which of the following is true about isotopes?
· A) They have the same number of protons but different numbers of
electrons.
B) They have the same mass number but different atomic numbers.
C) They have the same number of neutrons but different atomic masses.
D) They have the same number of protons but different numbers of
neutrons.
Answer: D) They have the same number of protons but different numbers of
neutrons.
· What type of bond is formed between two atoms that share electrons?
· A) Ionic bond
B) Metallic bond
C) Covalent bond
D) Hydrogen bond
Answer: C) Covalent bond
· Which of the following statements is true about chemical reactions?
· A) Atoms are created and destroyed during a chemical reaction.
B) The mass of the reactants is always equal to the mass of the products.
, C) Energy is released only in exothermic reactions.
D) Reactions can occur without any energy change.
Answer: B) The mass of the reactants is always equal to the mass of the
products.
· Which of the following is an example of a physical change?
· A) Rusting of iron
B) Burning wood
C) Dissolving sugar in water
D) Decomposing food
Answer: C) Dissolving sugar in water
· The pH scale measures:
· A) Concentration of hydroxide ions
B) Concentration of hydronium ions
C) Ionic strength of a solution
D) Total mass of solute in a solution
Answer: B) Concentration of hydronium ions
· What is the primary factor that determines the rate of a chemical reaction?
· A) Temperature
B) Pressure
C) Concentration of reactants
D) All of the above
Answer: D) All of the above
· In a balanced chemical equation, the coefficients represent:
· A) The mass of each substance
B) The number of atoms of each element
C) The relative amounts of reactants and products
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