Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text:1) Combination Reactions (A+ B à AB): Two elements (or simple
compounds) become one compound.
Mg(s) + O,(g) à MgO(s)
SO((g)
S(s) + O2(g) à
2) Decomposition Reactions (AB à A+ B or ABC à AC + BC): A
compound becomes two or more elements (or simpler compounds).
Н,О() а Н,(g) + 0,(g)
CO,(g)
CUCO;(s) à CuO(s) +
3) Single Replacement Reactions (A+ BC à AC + B): An element (a
metal or a halogen) replaces another element (metal or halogen) in
solution.
Zn(s) + CUSO,(aq) à ZnSO̟(aq) + Cu(s)
NaBr(aq) à NaClI(aq) + Br,(aq)
Cl,(aq) +
4) Double Replacement Reactions (AB + CD à AD + CB): Two elements
"switch" (metals replace each other or hydrogen and a metal replace each
other).
Nal(aq) + Pb(NO,),(aq) à NaNO,(aq) à PbI,(s)
NaOH(aq) ӑ H,О() + NaCl{aq)
НС(аq) +
Reactions may be done in any order. You DO NOT have to indicate
the phase(s) of the products. Record observation(s) and write the
balanced chemical equation in Table 1. Reaction #1 has been done for
you.
1. Using a test tube and dropper (pipet), add 5 drops Nal(aq) to ~1 mL
Pb(NO,),(aq). This is a double replacement reaction.
2. Put a small scoop of copper (II) carbonate, CUCO;(s) into a medium test
tube. Using a test tube holder, gently heat the substance using a lab burner
for 3 minutes. This is a decomposition reaction.
3. Using a small, disposable test tube, heat a small scoop of sugar,
C12H2„0,(s) in a lab burner flame for 3. This is a decomposition reaction.
4. Using tongs, hold a strip of magnesium, Mg(s) in a burner flame.
Coution: do not lookk diroctlv ot the hricht light
Thio is o ombinotion
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