chemistry HW 1 Fall 2009

chemistry HW 1 Fall 2009 - Homework 1: Fall 2009 Choose the...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Homework 1: Fall 2009 Choose the correct answer to each question and submit your letter answers online by the due date, 5:00pm, September 18, 2009 1. How many neutrons are there in an atom of lead whose mass number is 208? A. 82 B. 126 C. 208 D. 290 E.none of them B 2. An oxide ion, O 2- , has: A. 8 protons and 10 electrons B. 10 protons and 8 electrons C. 8 protons and 9 electrons D. 8 protons and 7 electrons E.10 protons and 7 electrons A 3. Which of these pairs of elements would form an ionic compound? A. P and Br B. Cu and K C. C and O D. O and Zn E.Al and Rb D 4. The formula for calcium phosphate is A. CaPO 4 B. Ca 3 (PO 4 ) 2 C. Ca 2 (PO 4 ) 3 D. Ca 3 P 2 E.Ca 3 (PO 3 ) 2 B 5. Choose the formula that does not correspond to the name. D A. barium sulfate BaSO 4 B. sodium fluoride NaF C. potassium cyanide KCN D. aluminum nitrate AlN E. calcium nitride Ca 3 N 2
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. The table below describes four atoms. Which atoms represent the same element?
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 5

chemistry HW 1 Fall 2009 - Homework 1: Fall 2009 Choose the...

This preview shows document pages 1 - 3. Sign up to view the full document.

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