HW: 10.44

HW: 10.44

11th Grade

15 Qs

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HW: 10.44

HW: 10.44

Assessment

Quiz

Chemistry

11th Grade

Practice Problem

Medium

NGSS
HS-PS1-1

Standards-aligned

Created by

Jacqueline Bakalov

Used 3+ times

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15 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which formula represents an unsaturated hydrocarbon?

Media Image
Media Image
Media Image
Media Image

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many electrons are shared between the carbon atoms in a molecule of ethyne?

6

2

3

4

Answer explanation

In ethyne (C2H2), the two carbon atoms are connected by a triple bond, which consists of three shared pairs of electrons. Therefore, a total of 6 electrons are shared between the carbon atoms.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the general formula for the homologous series that includes ethyne?

CnHn

CnH2n

CnH2n+2

CnH2n-2

Answer explanation

Ethyne (C2H2) belongs to the alkyne homologous series, which follows the general formula CnH2n-2. This formula accounts for the triple bond in alkynes, distinguishing them from alkanes and alkenes.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which name represents a hydrocarbon?

1-hexene

1-iodohexane

3-hexanone

3-hexanol

Answer explanation

1-hexene is a hydrocarbon as it contains only carbon and hydrogen atoms, with a double bond. The other options contain functional groups (iodo, ketone, alcohol) that classify them as non-hydrocarbons.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which formula represents a hydrocarbon?

CO2

C3H8

C2H4O2

C3H8O

Answer explanation

A hydrocarbon consists only of carbon (C) and hydrogen (H) atoms. The formula C3H8 contains only carbon and hydrogen, making it a hydrocarbon. The other options include oxygen, disqualifying them as hydrocarbons.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Given the formula representing a compound: What is a chemical name of this compound?

2,3,3-trimethylbutane

2-methyl-2-ethylbutane

2,3-dimethylpentane

2,3-ethylpentane

Answer explanation

The compound's structure indicates three methyl groups on the second and third carbon of a butane chain, leading to the name 2,3,3-trimethylbutane. This matches the correct answer, distinguishing it from the other options.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Which formula represents 2-butene?

[See diagram 1]

[See diagram 2]

[See diagram 3]

[See diagram 4]

Answer explanation

2-butene is an alkene with the formula C4H8, characterized by a double bond between two carbon atoms. Diagram 2 correctly depicts this structure, showing the appropriate arrangement of carbon and hydrogen atoms.

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