AnswersSSA Science Intervention SC.8.P.8.5 - Elements and CompoundsCompounds

Compounds Answers

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1
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Which statement describes compounds?

A
Compounds are made of one type of atom.
B
Compounds cannot be represented by models.
C
Compounds are represented by chemical formulas.
D
Compounds cannot be broken down into simpler forms.
2
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symbol✔ formulacode

A
symbol
B
formula
C
code
3

1✔ 38

A
1
B
3
C
8
61252

O is a(n) [___] and H2O2 is a(n) [___].

Answer:

element; compound

61253

O is a(n) [___] and H2O2 is a(n) [___].

Answer:

element; compound

61254

H is a chemical and H2 is a chemical .

Answers:
Selection 1:symbol
Selection 2:formula
61255

Complete the sentence with the word "element" or "compound." O is a(n) and H2O2 is a(n) .

Answers:
Part 1:element
Part 2:compound
61256

Vanillin, a compound in vanilla bean, is used for flavoring ice cream. The chemical formula for this compound is C8H8O3.What elements make up this compound? Select three options.carbonchlorineheliumhydrogenosmiumoxygen

A
carbon
B
chlorine
C
helium
D
hydrogen
E
osmium
F
oxygen
61257

Vanillin, a compound in vanilla bean, is used for flavoring ice cream. The chemical formula for this compound is C8H8O3. How many of each atom is present in this compound? Carbon: Hydrogen: Oxygen:

Answers:
Selection 1:8
Selection 2:8
Selection 3:3
61258

Which chemical formula is represented by the model?

A
C4H
B
CH4
C
H2O
D
CO4
61259

A:[___]

A
1
B
3
C
8
61260

Which statement describes compounds?

A
Compounds are made of one type of atom.
B
Compounds cannot be represented by models.
C
Compounds are represented by chemical formulas.
D
Compounds cannot be broken down into simpler forms.
61261

Does this model represent a compound? Explain your answer.

Question illustration
Answer:

No, this model does not represent a compound. A compound consists of two or more different elements chemically bonded together. Because both spheres in this model are the same color, they represent atoms of the same element, making this a diatomic molecule of an element rather than a compound.

61262

Which subscripts complete the chemical formula for the compound?

Answers:
Selection 1:3
B::8
61263

H is a chemical [___] and H2 is a chemical [___].

A
symbol
B
formula
C
code
61264

Vanillin, a compound in vanilla bean, is used for flavoring ice cream. The chemical formula for this compound is C8H8O3.What elements make up this compound? Select three options.carbonchlorineheliumhydrogenosmiumoxygen

A
carbon
B
chlorine
C
helium
D
hydrogen
E
osmium
F
oxygen
61265

Carbon:[___]

A
1
B
3
C
8
61266

Which of these is a ball and stick model?

A
[Image: C subscript 2 H subscript 4....]
Option A
B
[Image: 2 overlapping large black spheres each with 2 smal...]
Option B
C
[Image: 2 medium sized black spheres connected by 2 grey s...]
Option C
D
[Image: 2 C's connected by 2 black lines. Each C has 2 H's...]
Option D
61267

Which chemical formula is represented by the model?

A
C4H
B
CH4
C
H2O
D
CO4
61268

Susana heats up a sample of red crystals. While the sample is being heated, a gas is released and a blue powder is left after the heating. Is the sample of red crystals an element or a compound? Explain your answer.

Answer:

The red crystal sample is a compound. This is because it was broken down into two different substances—a gas and a blue powder—when heated. Elements are pure substances that cannot be broken down into simpler substances by chemical means or heating.

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