Based in bonding theory, explain why heat capacity increases when you consider metals, ceramics and polymers.

Engineering

1 answer:

Sonbull [250]3 years ago

4 0

Answer:

Metals are good conductors are heat. Many applications of ceramics, such as their use as insulating materials cause higher heating capacity. In the case of polymers, we have to distinguish between the heat capacity of liquid, rubbery and glassy polymers. The heat capacity increases with increasing temperature, therefore, a liquid or rubbery polymer can hold more energy than a solid polymer.

Explanation:

Valence bond (VB) theory is a chemical bonding theory that explains the chemical bonding between two atoms. Like molecular orbital (MO) theory, it explains bonding using principles of quantum mechanics. According to valence bond theory, bonding is caused by the overlap of half-filled atomic orbitals. The two atoms share each other's unpaired electron to form a filled orbital to form a hybrid orbital and bond together. Sigma and pi bonds are part of valence bond theory.

Bonding, Structure and Properties

The bonding and structure of substances determine their properties.
Bonding is the way the atoms are held together.
The structure is the way the atoms are arranged relative to each other.
There are two major types of structure: giant and molecular.
Giant structures go on indefinitely, whereas molecular structures are made up of groups of atoms.

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Answer:

The solution code is written in Java.

Scanner input = new Scanner(System.in);
System.out.print("Enter operator: ");
String operator = input.nextLine();
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int num1 = input.nextInt();
System.out.print("Enter second integer: ");
int num2 = input.nextInt();
int result = 0;
switch(operator){
case "+":
result = num1 + num2;
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default:
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}
System.out.println(result);

Explanation:

To ask for the user input for two whole numbers and an operator, we can use Java Scanner class object. Since the input operator is a string, we can use nextLine() method to get the operator string (Line 3). We use nextInt() method to get whole number input (Line 5 & 7).

Next we use the switch keyword and pass the operator into the switch structure to determine which case statement should be executed. For example, if the input operator is "*" the statement "result = num1 * num2; " will run and multiply num1 with num2.

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Answer:

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