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CI Investigation 7
Test Description: Melting. dissolving.
Instructions: Answer all questions to get your test result.
1) Which answer choice best describes melting?
A
Melting occurs when particles of a solid break apart and become uniformly mixed with particles of a liquid.
B
Melting occurs when heat is added or removed and particles are able to break away and form a solution.
C
Melting occurs when a substance is stirred into another substance and is then heated. The substances join together as liquid
D
Melting occurs when a substance is heated. Particles gain kinetic energy. The substance changes phase from solid to liquid
2) Which answer choice best describes dissolving?
A
Dissolving occurs when a substance is heated. Particles gain kinetic energy. The substance changes phase from solid to liquid
B
Dissolving occurs when particles of a solid break apart and become uniformly mixed with particles of a liquid.
C
Dissolving occurs when heat is added or removed and particles are able to break away and form a solution.
D
Dissolving occurs when a substance is stirred in another substance and is then heated. The substances join together as liquid
3) For a substance to melt, which of the following is required?
A
A solute.
B
A solvent.
C
A change of phase.
D
A solution.
4) When a substance dissolves, which of the following is created?
A
A solute.
B
A change of phase.
C
A solvent.
D
A solution.
5) You create a salt water solution. Which substance is the solvent?
A
salt
B
salt water
C
water
6) What is a compound?
A
A type of substance containing atoms from two or more elements.
B
Matter with a composition that is always the same.
C
None of these options
D
Matter that is a combination of two or more substances that are not chemically combined.
7) What is a mixture?
A
None of these options
B
A type of substance containing atoms from two or more elements.
C
Matter with a composition that is always the same.
D
Matter that is a combination of two or more substances that are not chemically combined.
8) What is the appropriate way in which to separate a solution?
A
Evaporation
B
Filtration
9) What is the appropriate way in which to separate a mixture?
A
Filtration
B
Evaporation
10) Which explanation best defines solubility?
A
Solubility is the ability of a substance to dissolve in another.
B
Solubility is the lack of ability of a substance to dissolve.
C
Solubility explains solids that simply fall to the bottom of a liquid when mixed together.
D
Solubility is the ability of a substance to dissolve in water.
*select an answer for all questions
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