Melting Point

Melting Point

12th Grade - University

5 Qs

quiz-placeholder

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Melting Point

Melting Point

Assessment

Quiz

Chemistry

12th Grade - University

Practice Problem

Hard

NGSS
MS-PS1-4, HS-PS3-4, MS-PS3-4

+1

Standards-aligned

Created by

Anna Duncan

Used 11+ times

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5 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The melting point of a substance is_____

the temperature at which the solid starts to melt

the temperature at which all of the solid has melted

the temperature range over which the solid first starts to melt, to when all of the solid has melted

the temperature at which the solid starts to melt, rounded to the nearest whole number

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

2.

MULTIPLE SELECT QUESTION

1 min • 1 pt

Melting point analysis can be used to_____. Tick all that apply.

purify a compound

give an indication of the purity of a compound

confirm the identity of a pure compound

identify the impurities present in the sample

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The presence of impurities in the compound ____ the melting point and ____its melting temperature range

lowers; broadens

lowers; narrows

increases; broadens

increases; narrows

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Mixing a small quantity of the product with some of the pure compound and determining the MP and the range of the melting temperature to determine if the product and the pure compound are the same substance is called___

mixed melting point

pure melting point

mixed melting range

double melting point

5.

MULTIPLE SELECT QUESTION

1 min • 1 pt

Why is the melting temperature range different for a compound with and without impurities?

due to disruption in intermolecular bonding in the crystal lattice

due to disruption in intramolecular bonding in the crystal lattice

due to broken covalent bonds

due to new covalent bonds being made

Tags

NGSS.HS-PS3-4

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