4 2 Explain why solder is harder than pure tin. Complete the sentences. Use Figure 4. [2 marks] In solder the layers are distorted. This is because the atoms of tin and lead have different Therefore the layers cannot easily

Question

4 2 Explain why solder is harder than pure tin. Complete the sentences. Use Figure 4. [2 marks] In solder the layers are distorted. This is because the atoms of tin and lead have different Therefore the layers cannot easily

Answer 1

"In solder, the layers are distorted. This is because the atoms of tin and lead have different radii. Therefore the layers cannot easily glide."

Answer 2

## Step1: Understanding the Problem:To solve this problem, it is essential to understand the atomic structure difference between solder (an alloy made of both tin and lead) and pure tin. In pure form, an atom's layers align very uniformly and are not disturbed. The atomic homogeneous structure of a pure substance allows a smooth gliding of atomic layers under force, which results in a relatively less hardness of pure substances. On the other hand, an alloy like a solder has distorted atomic layers due to different atom's radii, leading to hindrance in smooth gliding and making the alloy hard.## Step2: Filling the Sentences:Now based on our understanding above, we pour out structured answers into the blank spaces of provided sentences.

Question

4 2 Explain why solder is harder than pure tin. Complete the sentences. Use Figure 4. [2 marks] In solder the layers are distorted. This is because the atoms of tin and lead have different __ Therefore the layers cannot easily __

Answer

Answer

Explanation

4 2 Explain why solder is harder than pure tin. Complete the sentences. Use Figure 4. [2 marks] In solder the layers are distorted. This is because the atoms of tin and lead have different Therefore the layers cannot easily