NEW
Font size
WorksheetsGCSE Chemistry - Atoms & Ions #1
Total questions: 10
Worksheet time: 5mins
What is the basic structure of an atom?
Central nucleus surrounded by electrons
Central nucleus surrounded by protons
Central nucleus surrounded by neutrons
Central nucleus surrounded by positrons
What are the two types of particles in the nucleus of an atom?
Protons and electrons
Neutrons and electrons
Neutrons and positrons
Protons and neutrons
What is the relative mass of protons and neutrons?
Protons are heavier than neutrons
Protons and neutrons have no mass
Protons and neutrons have the same mass
Neutrons are heavier than protons
What is the charge of protons?
Positive
Negative
Variable
Neutral
What is the charge of neutrons?
Variable
Neutral
Negative
Positive
What is the charge of electrons?
Positive
Negative
Neutral
Variable
What happens to an atom when it loses or gains electrons?
It becomes a molecule
It becomes a compound
It becomes a mixture
It becomes an ion
What does the atomic number of an element represent?
Number of shells
Number of electrons
Number of protons inside the nucleus
Number of neutrons
What does the mass number of an element represent?
Number of shells
Number of protons inside the nucleus
Number of electrons and protons of an atom
Number of neutrons and protons inside the nucleus
How many protons does an oxygen atom have?
6
7
9
8
