Yr9 Atoms and The Periodic Table

Which one of the following is an example of an element?

An atom with an atomic number of 9 and a mass number of 19 has how many neutrons?

What is the overall charge of an atom with 11 protons, 12 neutrons, and 11 electrons?

The nucleus of every atom has at least one

Who first developed the idea of the universe being comprised of particles called atoms?

Electrons are found in

Which of the following is NOT a subatomic particle of matter?

Neutrons have a:

An atom has 3 protons, 4 neutrons and 3 electrons. What is this atom's mass number?

What is the correct number of electrons in the first three shells?

Electrons have a:

The name of an atom depends on the

What is between the nucleus and the electrons in an atom?

This subatomic particle has an extremely small mass compared to the other two

If the nucleus was around the size of a marble, how big would the whole atom be?

Elements in the periodic table are arranged according to their

Whose model of the atom was dubbed "The Plum Pudding Model"?

Helium (atomic number: 2) has how many protons?

What is the mass number?

How many electrons are found in the first electron shell?