Radio activity

Which particle has a negative charge

• Alpha

• Electron

• Proton

• Neutron

What is an isotope

• An atom with the same number of neutrons different number of protons

• An atom that has lost or gained an electron

• An atom with the same number of protons, different number of neutrons

• An atom with the same number of electrons and different neutrons

The centre of an atom is called

• the electron

• the proton

• the nucleus

• the neutron

What stops beta radiation

• Paper

• Air

• Glass

• Aluminium 3mm or thicker

The three types of nuclear radiation in increasing order of penetrating power are ____.  

•   alpha, beta, gamma 
• X ray, beta, gamma
• alpha, gamma, beta 
• X ray, gamma, beta 

The type of radioactive particle that can be stopped by a sheet of paper is the ____.

• alpha particle
• beta particle
• gamma ray
• uranium

A helium nucleus with two protons and two neutrons is called a(n) ____ particle

• alpha
• beta
• gamma
• lambda

What are found in the nucleus of an atom?

• protons and electrons

• electrons and neutrons

• protons, neutrons, and electrons

• protons and neutrons

Protons do not repel each other in the nucleus because of the ______

• weak force

• electric force

• strong force

• gravitational force

Alpha particles contain ___________.

• two protons and two electrons

• two electrons and two protons

• two protons and two neutrons

• two electrons and two neutrons