Reviewing Chemistry Concepts Part II Write the complete question and select the correct answer.

Question 11 The properties of elements on the periodic table can be predicted by… a.The color of the element b.The number of isotopes c.The solubility of the element d.The position on the periodic table

Question 12 Which elements have similar reactivity? a.Rubidium, yttrium, and zirconium b.Magnesium, strontium, and barium c.Calcium, cadmium, and carbon d.Chlorine, nitrogen, sulfur

Question 13 Calculate the wavelength of rubidium if the frequency is 3.84 x Hz. (speed of light (c ) = 3.00 x 10 8 m/s) Speed of light = (frequency) x (wavelength) C = f ƛ

Question 14 S How many neutrons? a.20 b.18 c.16 d

Question 15 What is the average atomic mass of an element that has % of isotope type 1 ( amu) and 27.85% of isotope type 2 ( amu)

Question 16 List the following types of electromagnetic radiation in order from least to most energetic. Microwave, gamma, radio, ultraviolet

Question 17 What is the molarity of a solution if mol of KOH was dissolved in water to yield 10.0 mL of solution? M = mol/L A).392 M B)392 M C)2.55 M D)2.55 x M

Question 18 Calculate the volume of M solution that contains 0.5 g of NaCl. M = mol/L a mL b.93.7 mL c.57.0 mL d mL

Question 19 How many mL of NH3 are needed to make 100 mL of 1M NH3? (The stock solution is 14.8M) M1V1= M2V2 a.6.76 mL b.14.8 mL c.5.23 mL d.2.35 mL

Question 20 Which particle was discovered as a result of the cathode ray experiments? a.Proton b.Neutron c.Electron d.Nucleus