Question 1

Classify as physical or chemical change?A) milk turns sourB) battery cables corrodeC) sugar when heated becomes brownD) when cooled, liquid water becomes iceE) hard-boiling an egg

F) cutting a bar of sodium metal into pieces with a knife

G) lard when heated changes to liquidH) a freshly cut apple turns brown I) mixing sugar and cinnamon J) water disappears from a beaker in a few

days at room temperature

Question 2

• How many protons and electrons are present in a Ca2+ ion?

Question 3

• An atom of the isotope chlorine-39 consists of how many protons, neutrons, and electrons?(p = proton, n = neutron, e = electron)

Question 4

• Which element matches the following electron configuration: 1s22s22p63s23p64s1?

Question 5

• The maximum number of electrons that the p subshell can hold is

Question 6

• The charge on the alkaline earth metal ions is ______.

Question 7

• The electrons that reside in the outermost energy levels of an atom are called _____.

Question 8

• Identify the ionic compound among the following:A) SO2

B) AlCl3

C) CH4

D) HF

Question 9

• What is the molecular weight of P4O10 and (NH4)2S ?

Question 10

How many grams of biotin (C10H16N2O3S) are in 3 moles?

Question 11

• How many kg of carbon dioxide are produced when 150 kg of glucose (C6H12O6) are

fermented? C6H12O6 -> 2C2H5OH +

2CO2

Question 12

• How many grams of oxygen are consumed when 130.7 g of glucose (C6H12O6) burns in

excess oxygen? C6H12O6 + 6O2 -> 6CO2 + 6H2O

Question 13

• How many mL of water must be added to 300 mL of 0.75 M HCl to dilute the solution to0.25 M?

Question 14

• What volume of concentrated nitric acid (15.0 M) is required to make 300 mL of a 2.5 Mnitric acid solution?

Question 15

• What is the molarity of a solution that contains 3.00 moles of solute and 12.00 Liters of solution?

Question 16

• What is the molar concentration of a solution containing 22.0 g of CH3OH in 250 cm3

solution?

Question 17

• A substance that can behave as either an acid or a base isA) anthocyanin.B) a neutral substance.C) an indicator.D) an amphiprotic substance.

Question 18

• What is the difference between a strong and weak acid?

Question 19

• List strong acids

Question 20

• The hydroxide ion concentration of a solution of a base is 0.001 M. The pH of the solution is:

• Calculate the pH of a 0.001 M of nitric acid.

Question 21

• The oxidation number of:a) Oxygen in most of the compounds:b) Chloride in most of the compounds:c) Sulphur in SO2

d) Nitrogen in NO3-

e) Carbon in carbonate ion.f) Metallic Iron (Fe)g)O2

h)Al

Question 22For the following reaction:

3 K + TiCl3 ------> Ti + 3 KCl

a) What species is being oxidized? b) What species is being reduced?

c) How many electrons total are transferred? d) Which atom's oxidation number does not change during the reaction?

Question 23

• An alpha particle is the same as ____ nucleus• A beta particle is also written as ______.• Difference between positron and beta

particle?• Which one is the slowest moving radiation?

Question 24

• When radioactive radon-222 emits an alpha particle, the remaining atom left behind is __.

Question 25

• Most of the health damage associated with radiation is caused by __ radiation.A) AlphaB) BetaC) GammaD) delta

Question 26

• Cesium-134 is a b emitter with a half-life of 2 years. How much of a 2.50 g sample of cesium-134 will remain after 10 years?

Question 27

• When Pb-210 decays by release of a beta particle, what isotope is formed?

Question 28

• The isotope 206Pb hasA) 82p, 124n, 82e.B) 124p, 82n, 82e.C) 124p, 82n, 124e.D) 82p, 82n, 124e.

Question 29

• Which best describes saturated hydrocarbons?A) Lose water on heatingB) Require water for their synthesisC) Contain only carbon-carbon single bondsD) Are soluble in waterE) Have the maximum number of water molecules in their formula