Science term 4 revision

What is Alpha Radiation

Helium Atoms

What is Beta Radiation

Fast Moving Electrons

What is the change in atomic number for Alpha Radiation

-2

What is the change in atomic number for Beta Radiation

+1

What is Gamma Radiation

Electromagnetic Wave

Fission

Splitting of nucleus

Fusion

Joining of 2 or more nucleus

Parent nucleus

Unstable nucleus that releases energy to become stable

Daughter nucleus

Nucleus after fission or fusion

Isotope

Same element but different mass

Chemical reactions

Involve electrons but have no change to the nucleus

Nuclear reactions

Changes to nucleus

Acid

Corrosive substance which has a pH lower than 7

Acid cause

High concentration of hydrogen-ions

Alkali

A base which is soluble in water

Base

A substance that reacts with acid to neutralise it and produce a salt

Corrosive

Able to damage metal, stonework, clothes and skin

Neutralise

To be made neutral by removing any acidic or alkaline nature