HW 1 - b. ___________ c. ___________ d. ___________ 7....

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
CHE-105 – Exploring Chemistry Chapter 1 Homework Name _________________________ 1. Classify each as element (e), compound (c), homogeneous (hm) or heterogeneous (ht) mixture. a. pure water ___ b. air ___ c. argon ___ d. carbon dioxide ___ e. lemonade ___ f. concrete ___ g. brass ___ 2. Classify each of the following as atom (a) or molecule (m). a. nitrogen ___ b. oxygen ___ c. argon ___ d. water ___ e. carbon monoxide ___ 3. Which elements belong in the same family as neon? ___ a. hydrogen b. helium c. nitrogen d. radon e. carbon 4. Which elements belong to the same period? ___ a. He, Ne and Xe b. K, Cr, Br c. Mg, Ca, Zn d. Al, Ge, Ga e. both b and c 5. Give the proper name for the following substances. a. KCl _________________ b. CS 2 _________________ c. CaCl 2 _________________ d. N 2 O 3 _________________ e. Pb _________________ 6. What are the four most prevalent components of dry air? a. ___________
Background image of page 1

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

View Full DocumentRight Arrow Icon
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: b. ___________ c. ___________ d. ___________ 7. Balance the following chemical equations. a. C 2 H 6 + O 2 CO 2 + H 2 O b. NO + O 2 + H 2 O HNO 2 8. How many of each atom is present in the following compounds? a. NaCl b. HNO 3 c. H 2 O d. Na 2 CO 3 e. Ca(NO 3 ) 2 f. N 2 9. What are the three regions of the atmosphere? a. lowest ____________ b. middle ____________ c. highest ____________ 10. List five types of air pollution and a source for each. a. _______________ (type) _________________ (source) b. _______________ (type) _________________ (source) c. _______________ (type) _________________ (source) d. _______________ (type) _________________ (source) e. _______________ (type) _________________ (source)...
View Full Document

Page1 / 2

HW 1 - b. ___________ c. ___________ d. ___________ 7....

This preview shows document pages 1 - 2. Sign up to view the full document.

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