CAIE IGCSE Chemistry 2.2 Atomic Structure and the Periodic Table Topic Practice

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Covered syllabus points

2.2.1—Structure of the atom as a central2.2.2—Relative charges and relative masses2.2.3—Proton number/atomic number as the2.2.4—Mass number/nucleon number as the2.2.5—Electronic configuration of elements2.2.6—Periodic table shell rules: (a) Group

Question 1

[Maximum number: 1]

Four statements about atoms are listed.

1 The centre of an atom is positively charged.
2 Protons and electrons are located in the nucleus.
3 Protons and electrons have the same mass.
4 Most of the mass of an atom is in the nucleus.

Which statements are correct?

A

1 and 2

B

1 and 4

C

2 and 3

D

3 and 4

Question 2

[Maximum number: 2]

Atoms and ions are made from small particles called electrons, neutrons and protons.

Complete the table.

Table for Question 2 — CAIE IGCSE Chemistry

Question 3

[Maximum number: 1]

The structure of an atom of element X is shown.

Figure for Question 3 — CAIE IGCSE Chemistry

key
- = electron
n= neutron
p= proton

What is element X ?

A

boron

B

carbon

C

sodium

D

sulfur

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