Long Quiz in GenChem1

In one experiment, 0.558 g element X was found to react with 0.320 g element Y to form only one product, compound Z. How many grams of compound Z were formed? 

• 0.238 g

• 0.558 g

• 0.320 g

• 0.878 g

When 24.3 g magnesium reacts completely with 16.0 g oxygen, exactly 40.3 g magnesium oxide is formed. Which of the following laws is illustrated by this observation? 

• Law of Definite Proportion

• Law of Multiple Proportion

• Law of Conservation of Mass 

• Law of Conservation of Energy

Which of the following statements is consistent with Dalton’s Atomic Theory? 

• The atoms of element A are identical with the atoms of another element D.

• The atoms of element A have the same mass as the atoms of another element D.

• The atoms of element A are different from the atoms of another element D. 

• The atoms of element A have the same properties as the atoms of another element 

According to Dalton’s atomic theory, which of the following is involved in a chemical reaction? 

• The conversion of one atom into another

•  The combination of atoms

• The formation of a new atom

• The disappearance of an atom

In which of the following quantities will two isotopes of an element have different values?

• Atomic number

• Mass number

• Number of protons

• Number of electrons

Which of the following information on the number of protons (p), electrons (e) and neutrons (n) is correct for ₉₂U²³⁸?

• 92 p, 92 n, 92 e

•  92 p, 146 n, 92 e

• 238 p, 146 n, 238 e

• 146 p, 82 n, 92 e

What is the mass number of an atom which has 11 protons, 11 electrons, and 12 neutrons? 

• 11

• 12

• 22

• 23

Which of the following data is correct for the Magnesium with 2 cation (atomic number = 12)? 

• 12 protons and 13 electrons

• 12 protons and 10 electrons

• 14 protons and 12 electrons

• 12 protons and 14 electron

Who is this Chemist that formulated a concept by describing one of his experiments involving mercuric oxide?

• John Dalton

• Joseph Proust

• Antoine Lavoisier

• Democritus

Cu¹³⁺ has a atomic number of 29 and mass number of 64. Which one of the following is correct?

• A = 64

  Z = 29

  p = 29

  e = 13

  n = 35

  Isotope = ₂₉⁶⁴Cu¹³⁺

• A = 13

  Z = 29

  p = 29

  e = 16

  n = 35

  Isotope = ₂₉⁶⁴Cu¹³⁺

• A = 64

  Z = 29

  p = 29

  e = 42

  n = 35

  Isotope = ₂₉⁶⁴Cu¹³⁺

• A = 64

  Z = 29

  p = 29

  e = 16

  n = 35

  Isotope = ₂₉⁶⁴Cu¹³⁺