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Edexcel International GCSE Chemistry (9-1) Answers 4CH1 - 2C - Topic 1

This document contains sample exam questions and answers about states of matter. It includes multiple choice and short answer questions about identifying states, properties of solids, liquids and gases, melting points, dissolving solids in water, and calculating solubility. The questions cover topics like identifying solids, liquids and gases, explaining why solids are more closely packed than liquids or gases, balancing chemical equations for dissolving reactions, and performing solubility calculations.

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mostafa barakat
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859 views3 pages

Edexcel International GCSE Chemistry (9-1) Answers 4CH1 - 2C - Topic 1

This document contains sample exam questions and answers about states of matter. It includes multiple choice and short answer questions about identifying states, properties of solids, liquids and gases, melting points, dissolving solids in water, and calculating solubility. The questions cover topics like identifying solids, liquids and gases, explaining why solids are more closely packed than liquids or gases, balancing chemical equations for dissolving reactions, and performing solubility calculations.

Uploaded by

mostafa barakat
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Edexcel International GCSE Chemistry (9-1) Answers 4CH1_2C_Topic 1

193 1 – States of Matter Mostafa Barakat (0100 165 44 62)


Edexcel International GCSE Chemistry (9-1) Answers 4CH1_2C_Topic 1

1) Jan 2013 Q (1)

(a)

(2)

(b)
capric acid: Solid
formic acid: liquid
palmitic acid: solid (2)
2) Jan 2013 Q (3_a)
3 (a)

(i)

(2)

(ii) because particles are more closely packed (1)

194 1 – States of Matter Mostafa Barakat (0100 165 44 62)


Edexcel International GCSE Chemistry (9-1) Answers 4CH1_2C_Topic 1

3) June 2016 [R] Q (1_a, b)

(a) A (the crystal dissolves) (1)

(b) A (it is all blue) (1)

4) Jan 2019 Q (10_a)

(a)
lanthanum because melting point is below 1030 °C
(i) (1)

(ii) Sm2O3 + 6HCl 


→ 2SmCl3 + 3H2O (1)

5) Sample Assessment Materials 2019 Q (1_a, b)


1

(a) A (1)

(b) C (1)

6) Sample Assessment Materials 2019 Q (2)


2

(a) mass of solid = 94.6 – 89.6 = 5.3 g (1)

mass of water= 115.8 – 94.9 = 20.9 g (1)

(b) 10.5
solubility = × 100 = 62.5 grams of solid per 100 g of water
16.8 (2)

(c) the gas will escape

the mass of solid remaining will be less than it should be

the value of the calculated solubility will be lower than it should be (3)

195 1 – States of Matter Mostafa Barakat (0100 165 44 62)

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