1. solid air fresheners probably shrink because they undergo sublimation.
a. true
b. false
2. complete the sentence by using word carbon dioxide, carbon or water vapor.
the \fake\ fog produced on a stage forms when solid ______ sublimates.
answer:
3. fill in the blank(s):
______ is the process in which a solid changes directly to a liquid state.
4. which of the following substances changes directly from a solid to a gas?
a. naphthalene
b. water ice
c. snow
d. two of the above
5. the substance commonly referred to as dry ice is solid ______.
a. oxygen
b. ammonia
c. nitrogen
d. carbon dioxide

Question

1. solid air fresheners probably shrink because they undergo sublimation.
   a. true
   b. false
2. complete the sentence by using word carbon dioxide, carbon or water vapor.
   the \fake\ fog produced on a stage forms when solid ______ sublimates.
   answer:
3. fill in the blank(s):
   ______ is the process in which a solid changes directly to a liquid state.
4. which of the following substances changes directly from a solid to a gas?
   a. naphthalene
   b. water ice
   c. snow
   d. two of the above
5. the substance commonly referred to as dry ice is solid ______.
   a. oxygen
   b. ammonia
   c. nitrogen
   d. carbon dioxide

Accepted Answer

### Question 1
# Brief Explanations:
Solid air fresheners shrink due to sublimation (solid to gas), so the statement is true.
# Answer:
A. TRUE

### Question 2
# Brief Explanations:
Stage fog from solid carbon dioxide (dry ice) forms when dry ice sublimes (solid to gas), absorbing heat and condensing water vapor. So the word is "carbon dioxide".
# Answer:
carbon dioxide

### Question 3
# Brief Explanations:
The process of a solid changing directly to a liquid is melting? Wait, no—wait, the question's partial text: "____ is the process in which a solid changes directly to a liquid state?" Wait, no, solid to liquid is melting, but if it's solid to gas then sublimation, but the blank's context: maybe a typo? Wait, the original text: "____ is the process in which a solid changes directly to a liquid state." Wait, no, solid to liquid is melting. But maybe the question was miswritten. Wait, no—wait, the user's image: "3. Fill in the blank(s): ____ is the process in which a solid changes directly to a liquid state." Wait, no, solid to liquid is melting. But maybe the intended process was solid to gas (sublimation) but the text says liquid. Wait, maybe a mistake. But assuming the question is about solid to liquid: melting. But if it's solid to gas, sublimation. But the text says "liquid state". So maybe "melting". But maybe the original question had a typo. Alternatively, if it's solid to gas, sublimation, but the text says liquid. Wait, the user's image: "liquid state"—so solid to liquid is melting. But maybe the question was supposed to be solid to gas, but the text is wrong. Alternatively, maybe the blank is "melting". But I'll proceed.
# Answer:
melting (Note: If the question intended solid to gas, it would be sublimation, but the text says liquid state.)

### Question 4
# Brief Explanations:
Naphthalene (mothballs) sublimes (solid to gas). Water ice melts to liquid, snow melts or sublimes? Wait, snow can sublime, but water ice primarily melts. Naphthalene definitely sublimes. So only naphthalene? Wait, no—wait, the question: "Which of the following substances changes directly from a solid to a gas?" (Assuming the missing part is "gas"). So naphthalene (a) sublimes. Water ice (b) melts to liquid, then evaporates. Snow (c) can sublime, but more commonly melts. So only naphthalene? But option d: two of the above. Wait, maybe the question is about solid to gas. Naphthalene (a) sublimes. Snow (c) can sublime (e.g., in cold, dry air, snow sublimes). So a and c? But water ice (b) melts. So if snow sublimes, then a and c: two of the above? Wait, no—naphthalene sublimes, snow can sublime, water ice melts. So if the question is "changes directly from solid to gas", then naphthalene (a) and snow (c) can sublime. So d: two of the above? Wait, but water ice (b) melts. So a (naphthalene) and c (snow) sublime. So d: two of the above.
# Answer:
d. two of the above (a. naphthalene and c. snow)

### Question 5
# Brief Explanations:
Dry ice is solid carbon dioxide, so the substance commonly referred to as dry ice is carbon dioxide.
# Answer:
d. carbon dioxide

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