1. Figure 1 shows toothbrushes in a container - Edexcel - GCSE Chemistry - Question 1 - 2022 - Paper 1
Question 1
1. Figure 1 shows toothbrushes in a container.
(a) The toothbrush handles are made of plastic (polymer).
(i) Give a reason why plastic is a suitable material to ma... show full transcript
Worked Solution & Example Answer:1. Figure 1 shows toothbrushes in a container - Edexcel - GCSE Chemistry - Question 1 - 2022 - Paper 1
Step 1
Give a reason why plastic is a suitable material to make a toothbrush handle.
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Answer
Plastic is a suitable material for toothbrush handles because it is strong, lightweight, and can withstand exposure to water without degrading. Additionally, plastic can be easily molded into different shapes, making it versatile for ergonomic designs.
Step 2
Which is a property of the ceramic that makes it suitable for the container?
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Answer
The correct answer is B: It does not react with water. This property ensures that the container can hold liquids without compromising its integrity.
Step 3
Which statement describes the size of a nanoparticle?
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Answer
The correct answer is C: the size of a few hundred atoms. Nanoparticles typically range from 1 to 100 nanometers in size, which corresponds to a few hundred atoms.
Step 4
Calculate the volume of water in 150 cm³ of this toothpaste.
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Answer
Given that water constitutes 25% of the toothpaste, the volume of water can be calculated as follows:
