Chemical Reactions Quiz
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by Brian Long
| 5 Questions
1
1
What characteristics do endthermic reactions have? (select all that apply)
Aborb heat
Temperature increases
Release heat
Temperature decreases
2
1
What characteristics do exothermic reactions have? (select all that apply)
Absorb heat
Temperature increases
Releases heat
Temperature decreases
3
1
Select two examples of endothermic reactions.
Cooking an egg
Melting ice cubes
Wood burning
Explosive dynamite
4
1
Select two examples of exothermic reactions.
Baking soda and vinegar reacting
Hand warmers
Wood burning
Photosynthesis
5
1
Balance the following equation. Use a separate sheet of paper to show your work.
____ Pb(OH)2 + ____ HCl → ____ H2O + ____ PbCl2
____ Pb(OH)2 + __2__ HCl → __2__ H2O + ____ PbCl2
____ Pb(OH)2 + __3__ HCl → __2_ H2O + _1___ PbCl2
_2__ Pb(OH)2 + ____ HCl → __2__ H2O + ____ PbCl2
It's alread balanced
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