Slide 1

Trivia Race #3

Slide 2

1. Which model represents the law of conservation of matter?

Slide 3

2. Which of the following is insoluble in water? In other words, which one can be a precipitate? i) Ammonium chloride ii) Calcium chromate iii) Barium bromide iv) Copper II carbonate

Slide 4

#3

Slide 5

#4

Slide 6

#5

Slide 7

#6

Slide 8

#7

Slide 9

#8

Slide 10

#9

Slide 11

#10

Slide 12

1. Which acid is the stronger acid? A. HCl B. HF 2. Which acid will have a higher pH? A. HCl B. HF NOTE: Must answer as a combination answer. Example: AA, AB, BB, or BA. #11

Slide 13

#12 What is the pH of a solution that has a hydronium ion concentration of [2.5 x 10 -3 ]? A. 11.4 B. 3.0 C. 2.6 D. 9.0

Slide 14

Not the same question: #13 What is the pOH of a solution that has a hydronium ion concentration of [2.5 x 10 -3 ]? A. 11.4 B. 3.0 C. 2.6 D. 9.0

Slide 15

#14 What is the hydroxide ion concentration of a solution that has a pOH of 8.8? A. 6.31 x 10 -6 B. 1.58 x 10 -9 C. 5.04 x 10 -5 D. 1.32 x 10 -8

Slide 16

#15 Consider four sealed, rigid containers with the following volumes: 50 mL, 100 mL, 250 mL and 500 mL. If each of these contains.25 moles of helium gas at standard temperature, which container would have the greatest pressure? A 50 mL B 100 mL C 250 mL D 500 mL

Slide 17

#16 Which substance would be least likely to dissolve in a polar solvent? A nonpolar molecule B acids C polar molecule D ionic compound

Slide 18

#17 When referring to the solubility of different substances, the phrase "like dissolves like" is often used as a guideline to select an appropriate solvent. The property referenced in "like dissolves like" is the A mass of the molecule B size of the molecule C polarity of the molecule D temperature of the molecule

Slide 19

#18 If the temperature of a gas changes, but the number of moles and volume remain constant, which of the following values must also change? A density B pressure C number of atoms D mass

Slide 20

#19 How many electrons are in a Cd 3+ ion? A 112 B 51 C 48 D 45

Slide 21

#20 From which of the following atoms would it be the MOST difficult to remove an electron? A sodium B aluminum C sulfur D chlorine

Slide 22

#21 A sample of Element X is found to contain 72.15% of isotope type 1 (84.9118 amu) and 27.85% of isotope type 2 (86.9092 amu). Calculate the average atomic mass. A 85.13 amu B 85.47 amu C 86.21 amu D 86.49 amu

Slide 23

#22 The protons in Rutherfords experiments were used to A identify chemical properties B identify the melting point C determine molecular mass D bombard sheets of gold

Slide 24

#23 Which of the following atoms would have the largest ionic radius? A lithium B sodium C potassium D cesium

Slide 25

#24 A solution in which more solute is dissolved than is typically soluble at a given temperature is A unsaturated B saturated C supersaturated D diluted

Slide 26

#25 What volume of 2.5M NaOH solution contains 3.25 mol of NaOH? A 0.098 L B 0.575 L C 1.30 L D 1.45 L

Slide 27

#26 Element X reacts with chlorine to form an ionic compound that has the formula XCl 2. To which group on the Periodic Table could element X belong? (A) Group 1 (B) Group 13 (C) Group 2 (D) Group 15

Slide 28

#27 Which general trend is found in Period 3 as the elements are considered in order of increasing atomic number? (A) increasing atomic radius (B) increasing electronegativity (C) decreasing atomic mass (D) decreasing first ionization energy

Slide 29

#28 Which of the following stated electrons were scattered throughout a positive mass? (A) Rutherford Model (B) Planck Model (C) Bohr Model (D) Plum Pudding Model

Slide 30

#29 Which conclusion is based on the gold foil experiment and the resulting model of the atom? (A) An atom is mainly empty space, and the nucleus has a positive charge. (B) An atom is mainly empty space, and the nucleus has a negative charge. (C) An atom has hardly any empty space, and the nucleus has a positive charge. (D) An atom has hardly any empty space, and the nucleus has a negative charge.

Slide 31

#30 Which of the following is a false statement: (A) Ernest Rutherford identified the nucleus of the atom. (B) Democritus thought that changes in matter resulted from atoms simply rearranging. (C) John Dalton believed that all atoms of the same element were all identical. (D) According to J.J. Thomson, atoms of elements are indivisible

Slide 32

#31 A bromine atom in the ground state will have an electron configuration of (A) [Ar] 4s 1 3d 10 4p 5 (B) [Ar] 4s 2 3d 9 4p 5 (C) [Ar] 4s 2 3d 10 4p 5 (D) [Ar] 4s 2 3d 9 4p 6

Slide 33

Slide 34

Slide 35

Slide 36

Slide 37

Slide 38