Atomic structure and the Periodic Table — Paper 1 · IGCSE Sciences - Co-ordinated (9-1) 0973

15 One atom of an isotope of fluorine is represented by 15 F . 9 How many neutrons does this atom have? A 6 B 9 C 10 D 15

1 marks

Answer: A

This question in 0973/11 May/June 2020

14 Which statement about atoms and molecules is correct? A All molecules are gases at room temperature and pressure. B An atom is the smallest part of an element. C Atoms of the same element all have the same mass. D Molecules always contain atoms of more than one element.

1 marks

Answer: B

This question in 0973/12 May/June 2020

15 Which row shows the particles in the nucleus of an atom of 25 Mg ? 12 protons neutrons A 12 12 B 12 13 C 13 12 D 13 13

1 marks

Answer: B

This question in 0973/12 May/June 2020

40 The diagrams represent the nuclei of four different atoms V, W, X and Y. V W X Y key n p n p proton p p n n n n p p p p n p p p n n neutron p n n n Which two diagrams represent isotopes of the same element? A V and Y B W and X C X and Y D Y and W

1 marks

Answer: C

This question in 0973/12 May/June 2020

15 Part of the Periodic Table is shown. The letters are not the symbols of the elements in the Periodic Table. W X Y Z Which statement is not correct? A W and X are metallic elements. B W and Z form an ionic compound. C X and Y form a covalent compound. D Z is a non-metallic element.

1 marks

Answer: C

This question in 0973/11 Oct/Nov 2021

40 An atom of beryllium is represented by Be. 9 4 How many neutrons are in the nucleus of this type of beryllium atom? A 4 B 5 C 9 D 13

1 marks

Answer: B

This question in 0973/12 May/June 2022

15 An atom of fluorine is represented by 19 9F. How many electrons does this atom contain? A 9 B 10 C 19 D 28

1 marks

Answer: A

This question in 0973/11 Oct/Nov 2022

16 Which row describes an atom that has the nucleon number 24? number of number of number of protons neutrons electrons A 8 8 8 B 12 12 12 C 21 24 21 D 24 28 24

1 marks

Answer: B

This question in 0973/11 May/June 2023

16 An atom of osmium is represented by 190 76Os. How many neutrons are in this atom? A 76 B 114 C 190 D 266

1 marks

Answer: B

This question in 0973/12 May/June 2023

16 The nucleon number of a hydrogen atom is 1. What is present inside the nucleus of this atom? A one proton and one electron B one proton and one neutron C one proton only D one neutron only

1 marks

Answer: C

This question in 0973/11 Oct/Nov 2023

14 Which statement about atoms is correct? A All atoms contain equal numbers of neutrons and protons. B All atoms of the same element have the same number of neutrons. C The Periodic Table lists atoms in order of increasing mass number. D The smallest unit of an element is an atom.

1 marks

Answer: D

This question in 0973/12 May/June 2024

17 The electronic structures of carbon and of hydrogen are shown. C H What is the formula of a compound formed between carbon and hydrogen? A CH2 B CH3 C C4H D CH4

1 marks

Answer: D

This question in 0973/11 Oct/Nov 2024

15 An atom of phosphorus has a nucleon number of 31 and a proton number of 15. How many neutrons are there in this atom? A 15 B 16 C 31 D 46

1 marks

Answer: B

This question in 0973/11 May/June 2025

16 The diagram shows the positions of some elements in the Periodic Table. Which element is in Group II and Period 3? C A D B

1 marks

Answer: A

This question in 0973/11 May/June 2025

14 Which row describes particles present in Mg 25 2+? 12 neutrons electrons A 12 10 B 12 12 C 13 12 D 13 10

1 marks

Answer: D

This question in 0973/12 May/June 2025