Chemistry Definitions Intermediate Quiz 3
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Intermediate Quiz 3
1. What is an endothermic reaction?
A reaction that absorbs heat
A reaction that releases heat
A reaction that produces light
2. What is an exothermic reaction?
A reaction that releases heat
A reaction that absorbs heat
A reaction that produces sound
3. What is equilibrium in chemistry?
A state where the forward and reverse reactions occur at the same rate
A state where no reactions occur
A state where only products exist
4. What is Le Chatelier’s Principle?
If a system at equilibrium is disturbed, it will adjust to restore equilibrium
The total mass remains constant
Energy is always released in a reaction
5. What is an organic compound?
A compound containing carbon atoms (usually with hydrogen)
A compound containing metals
A compound containing only oxygen
6. What is a functional group?
A specific group of atoms that gives characteristic properties to organic molecules
A group of elements in the periodic table
A type of chemical bond
7. What is a polymer?
A large molecule made up of repeating smaller units (monomers)
A type of ion
A kind of acid
8. What is a saturated solution?
A solution that cannot dissolve any more solute at a given temperature
A solution with very little solute
A solution with a pH of 7
9. What is a supersaturated solution?
A solution that contains more dissolved solute than it normally would at that temperature
A solution with no solute
A solution with a pH of 14
10. What is a volatile substance?
A substance that easily evaporates at normal temperatures
A substance that never evaporates
A substance that does not react
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