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 making toothbrush handles because it is strong and non-toxic, making it safe for daily use. Additionally, it is flexible and can be molded easily into desired shapes, enhancing user comfort.
Step 2
Which is a property of the ceramic that makes it suitable for the container?
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Answer
The property of the ceramic that makes it suitable for the container is that it does not react with water. This ensures the integrity of the container when exposed to moisture.
Step 3
Which statement describes the size of a nanoparticle?
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Answer
The statement that describes the size of a nanoparticle is that it is the size of a few hundred atoms.
Step 4
Calculate the volume of water in 150 cm³ of this toothpaste.
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Answer
To find the volume of water in 150 cm³ of toothpaste, we consider that water makes up 40% of the toothpaste. Thus, the volume of water is calculated as follows:
