practice MTa - Name: _ Date: _ 1. Which one of the...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
Name: __________________________ Date: _____________ 1. Which one of the following statements about atomic structure is false? A) The electrons occupy a very large volume compared to the nucleus. B) Almost all of the mass of the atom is concentrated in the nucleus. C) The protons and neutrons in the nucleus are very tightly packed. D) The number of protons and the number of neutrons are always the same in the neutral atom. 2. Which of the experiments listed below did not provide the information stated about the nature of the atom? A) The Rutherford experiment proved that the Thomson "plum pudding" model of the atom was essentially correct. B) The Rutherford experiment determined the charge on the nucleus. C) Millikan's oil-drop experiment showed that the charge on any particle was a simple multiple of the charge on the electron. D) The cathode-ray tube proved that electrons have a negative charge. 3. The ion 16 O 2- has A) 8 protons, 8 neutrons, 8 electrons B) 8 protons, 8 neutrons, 10 electrons C) 8 protons, 8 neutrons, 2 electrons D) 8 protons, 8 neutrons, 10 electrons E) 8 protons, 16 neutrons, 8 electrons 4. ______ form ions with a 2+ charge when they react with nonmetals. A) Alkali metals B) Alkaline earth metals C) Halogens D) Noble gases E) None of these choices 5. Which of the following formulas is not correct? A) ZnSO 4 B) Ca(OH) 2 C) NaS D) KF E) NH 4 Br Page 1
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
6. Which is the correct formula for gold(I) oxide? A) AuO B) Au 2 O C) AuO 2 D) Au 2 O 2 E) Au 2 O 3 7. Which of the following is not the correct chemical formula for the compound named? A) B) C) D) E) 8. The atomic mass of rhenium is 186.2. Given that 37.1% of natural rhenium is rhenium- 185, what is the other stable isotope? A) 183 75 Re B) 187 75 Re C) 189 75 Re D) 181 75 Re E) 190 75 Re 9. The average mass of a boron atom is 10.81. If you were able to isolate a single boron atom, what is the chance that you would randomly get an atom with mass 10.81? A) 0% B) 0.81% C) about 11% D) 10.81% E) greater than 50% Page 2 Zn 3 P 2 zinc phosphide HCl hydrogen chloride Fe 2 PO 4 iron(II) phosphate CaBr 2 calcium bromide Li 2 O lithium oxide
Background image of page 2
× 10 -2 mol? A) NO 2 B) H 2 O C) NH 3 D) C 2 H 6 E) NO 11. The mass of 0.82 mol of a diatomic molecule is 131.3 g. Identify the molecule. A) F 2 B) Cl 2 C) Br 2 D) I 2 E) Xe 12. NaHCO 3 is the active ingredient in baking soda. How many grams of oxygen are in 0.32 g of NaHCO 3 ? A) 0.011 g B) 1.0 g C) 0.061 g D) 0.0038 g E) 0.18 g 13. Compound X 2 Y is 60% X by mass. Calculate the percent Y by mass of the compound X 2 Y 2 . A) 20% B) 30% C) 40% D) 60% E) 80% 14. An oxybromate compound, NaBrO x , where x is a whole number, is analyzed and found to contain 52.95% Br by mass. What is x? A) 0
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 16

practice MTa - Name: _ Date: _ 1. Which one of the...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online