what type of VISUAL indication is there that a reaction happened? a. An iron nail rusts:...
what type of VISUAL indication is there that a reaction happened? a. An iron nail rusts: b. A fireworks display on the 4th of July: c. Alka-Seltzer® is dropped into a glass of water: d. Bleach is spilled onto your favorite shirt:
Homework Answers
Reaction can be identified if:
- bubble formation
- solid precipitates
- color change
- change in temperature
therefore
a. An iron nail rusts: --> presence of new chemical, since "grey" metal iron forms rusty red oxides. There is reaction
b. A fireworks display on the 4th of July: --> there is color change, also exothermics, i.e. they are "hot" so there is reaction
c. Alka-Seltzer® is dropped into a glass of water: bubble formation implies chemical reaction
d. Bleach is spilled onto your favorite shirt: --> color change, also bleaching is exothermic, so expect temperature change
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what type of VISUAL indication is there that a reaction
happened? a. An iron nail rusts:...
UW 3. H2O2(aq) → H2O(1) + (g) 4. Type of chemical reaction: Questions and Problems 01...
UW 3. H2O2(aq) → H2O(1) + (g) 4. Type of chemical reaction: Questions and Problems 01 What evidence of a chemical reaction might you see in the following cases? Refer to Table 1. a. dropping an Alka-Seltzer tablet into a glass of water b. bleaching a stain c. burning a match d. rusting of an iron nail
01 What evidence of a chemical reaction might you see in the following cases? Refer to...
01 What evidence of a chemical reaction might you see in the following cases? Refer to Table 1. a. dropping an Alka-Seltzer tablet into a glass of water b. bleaching a stain c. burning a match d. rusting of an iron nail
L. Observation of burning match or splint What caused the change in the burning match or...
L. Observation of burning match or splint What caused the change in the burning match or splint? Na,C0,()+ - HC ) CO,)+ H00) + NaCl) 5. Type of reaction: F. Hydrogen Peroxide Reactants 1. Appearance of 2. Evidence of a Chemical Reactants Reaction H₂O₂(aq) light yellow 13 usble 3. ___ H2O2(aq)- - H,00) + ___0,() 4. Type of chemical reaction: Questions and Problems Q1 What evidence of a chemical reaction might you see in the following cases? Refer to Table...
UW 3. H2O2(aq) → H2O(1) + (g) 4. Type of chemical reaction: Questions and Problems 01 What evidence of a chemical reaction might you see in the following cases? Refer to Table 1. a. dropping an Alka-Seltzer tablet into a glass of water b. bleaching a stain c. burning a match d. rusting of an iron nail
01 What evidence of a chemical reaction might you see in the following cases? Refer to Table 1. a. dropping an Alka-Seltzer tablet into a glass of water b. bleaching a stain c. burning a match d. rusting of an iron nail
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