The melting points of a few things are given in the table below. Chocolate Wax Ice sticks Aluminium 32 ° C 45 ° C 0 ° C 660 ° C Answer the following questions using the information from the table. Chocolate turns soft and sticky in summer but not in winter. Why?

Chocolate turns soft and sticky in summer because the temperature in this season is rising over 30 0 C , while the melting point of the chocolate is at 32 ° C . The melting point is usually defined as the point or temperature at which materials change from a solid to liquid. Hence, the chocolate melts to soft and sticky or liquid.

The melting points of a few things are given in the table below. Chocolate Wax Ice sticks Aluminium 32 ° C 45 ° C 0 ° C 660 ° C Answer the following question using the information from the table. Should we keep a block of wax near a burning stove?

No, we should not keep a block of wax near a burning stove because it melts at 45 0 C and then vaporises. The melting point is usually defined as the point or temperature at which materials change from a solid to a liquid. When the wax is heated on the stove, the wax particles gain energy to break apart the intermolecular forces of attraction resulting in the free moving wax particles also known as the liquid state.

The melting points of a few things are given in the table below. Chocolate Wax Ice sticks Aluminium 32 ° C 45 ° C 0 ° C 660 ° C Answer the following question using the information from the table. Why do we need to store ice sticks in the freezer?

Matter can change from one state to another state either by heating or by cooling. We need to store ice sticks in the freezer otherwise at room temperature they melt and turn into a liquid that is water. The melting point of ice stick is 0 0 C .

E M B I B E

Revised Longman Active Science.>Materials and Matter>Chapter 13 - Matter>Subject Connect

Natasha Mehta Solutions for Exercise 8: Subject Connect

Author:Natasha Mehta

Natasha Mehta Science Solutions for Exercise - Natasha Mehta Solutions for Exercise 8: Subject Connect

Attempt the free practice questions from Exercise 8: Subject Connect with hints and solutions to strengthen your understanding. Revised Longman Active Science. solutions are prepared by Experienced Embibe Experts.

Questions from Natasha Mehta Solutions for Exercise 8: Subject Connect with Hints & Solutions

EASY

4th CBSE

IMPORTANT

Revised Longman Active Science.>Chapter 13 - Matter>Subject Connect>Q 1

The melting points of a few things are given in the table below.

Chocolate	Wax	Ice sticks	Aluminium
$32 ° C$	$45 ° C$	$0 ° C$	$660 ° C$

Answer the following questions using the information from the table. Chocolate turns soft and sticky in summer but not in winter. Why?

EASY

4th CBSE

IMPORTANT

Revised Longman Active Science.>Chapter 13 - Matter>Subject Connect>Q 2

The melting points of a few things are given in the table below.

Chocolate	Wax	Ice sticks	Aluminium
$32 ° C$	$45 ° C$	$0 ° C$	$660 ° C$

Answer the following question using the information from the table.
Chocolate melts but, nothing happens to the aluminium wrapper of the chocolate even during hot summer days. Why?

MEDIUM

4th CBSE

IMPORTANT

Revised Longman Active Science.>Chapter 13 - Matter>Subject Connect>Q 3

The melting points of a few things are given in the table below.