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Laabri

CP Chem Chemical & Physical Changes/Elements & Compounds/Mixtures Quiz (9/25/2024)

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Last updated about 1 year ago
10 Nsɛmmisa
Ɛhia
2
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2
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3
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5
Ɛhia
4
Ɛhia
6
Ɛhia
2
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2
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2
Asemmisa {{asɛmmisaAhyɛnsode}}
1.

Consider the table below. In a sample of 100 g of sucrose, what would be the expected mass of hydrogen?

Asemmisa {{asɛmmisaAhyɛnsode}}
2.

Consider the table below. Why are the mass ratios of copper and chlorine not the same for Compound I and Compound II?

Asemmisa {{asɛmmisaAhyɛnsode}}
3.

When mercury(II) oxide is heated, it decomposes into mercury and oxygen. If a 28.4 g sample of mercury(II) oxide decomposes producing 2.0 g of oxygen, what is the percent by mass of mercury in the sample?

Asemmisa {{asɛmmisaAhyɛnsode}}
4.

Sort the following words- Which represent physical changes and which represent chemical changes?

Mmuae Afoforo a Wobɛpaw:
vaporize
crush
ferment
corrode
burn
boil
explode
tarnish
freeze
condense
Asemmisa {{asɛmmisaAhyɛnsode}}
5.
Mmuae Afoforo a Wobɛpaw:
Oil and water

Coffee (various dissolved compounds in water)

Brass (a solid mixture of copper and zinc)

soil

Rubbing alcohol (isopropyl alcohol dissolved in water)

chocolate chip cookie
salad

Vinegar (acetic acid dissolved in water)

Asemmisa {{asɛmmisaAhyɛnsode}}
6.

A 2 gram sample of sucrose is 6.50% hydrogen. What is the mass percentage of hydrogen in 300 g of sucrose? Explain your reasoning.

Asemmisa {{asɛmmisaAhyɛnsode}}
7.

Which two are categorized as pure substances?

Asemmisa {{asɛmmisaAhyɛnsode}}
8.

What are examples of homogeneous mixtures?

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9.

Which among the following are examples of heterogeneous mixtures?

Asemmisa {{asɛmmisaAhyɛnsode}}
10.

Identify the two compounds from the following substances.